Smart Lock Installation Training: B2B Distributor Guide

Build a smart lock installation training program for distributors and installers. Learn door compatibility, hands-on testing, commissioning, safety and support.

segulock

10/21/202614 min read

Smart Lock Installation Training for Distributors: A Complete B2B Checklist

A hardware distributor imports 500 fingerprint smart locks for the local market.

The products have been tested. The packaging looks professional. The supplier has provided the installation manuals, and the sales team is ready to begin selling.

However, after the first 50 installations, customer complaints start to appear.

Some doors do not close correctly. Other locks are paired with the wrong app. Several installers use incorrect accessories, while a property manager discovers that the administrator account belongs to the technician who installed the locks.

The problem is not necessarily the smart lock itself.

It may be a lack of standardized installation procedures.

For importers, wholesalers, smart home distributors, and project buyers, smart lock installation training is an essential part of building a reliable local sales and service network.

A well-designed training program helps installers understand door compatibility, mechanical fitting, electronic setup, commissioning, and customer handover.

This guide explains how distributors can build a practical smart lock installer training program, organize hands-on sessions, evaluate technician competence, and reduce avoidable installation-related complaints.

It also includes an example training curriculum, an installer assessment framework, and a field installation checklist.

1. Why Smart Lock Distributors Need Installation Training

Selling a smart lock and installing a smart lock are two different activities.

A salesperson may understand the advertised functions of a product:

  • Fingerprint unlocking

  • PIN code access

  • RFID cards

  • App management

  • Temporary credentials

  • Mechanical key backup

  • Remote functions where supported

An installer must understand much more.

The installer needs to determine whether the selected product is compatible with the physical door, mount the hardware correctly, configure the supported functions, verify normal operation, and explain the system to the customer.

If different installers use inconsistent procedures, customers may experience different results with the same product model.

A distributor training program can help standardize:

  • Door measurements

  • Product selection

  • Installation preparation

  • Mechanical inspection

  • Electronic setup

  • Account administration

  • Functional testing

  • Documentation

  • Customer handover

Training is not simply about learning how to attach a smart lock to a door. It is about establishing a repeatable installation and commissioning process.

2. Who Should Attend Smart Lock Installation Training?

A distributor may work with several types of personnel.

Locksmiths and Door Hardware Installers

These professionals need detailed knowledge of mechanical compatibility, mortises, cylinders, door preparation, and lock operation.

Smart Home Integrators

They may need additional training on apps, gateways, network requirements, and access-control configuration.

Distributor Technical Support Staff

They should understand installation fundamentals so they can distinguish mechanical problems from software or configuration issues.

Sales Representatives

Sales staff do not need to perform complex installations, but they should understand product compatibility and know what technical information to collect before accepting an order.

Property Maintenance Teams

For apartments, offices, rental properties, and other managed buildings, maintenance staff may require training in authorized routine operation, basic troubleshooting, and handover procedures.

Not everyone needs the same level of technical training.

A useful program separates general product knowledge from hands-on installer responsibilities.

3. Start With the Exact Smart Lock Model

One of the most important installation-training rules is:

Do not train technicians using a generic smart lock manual and assume it applies to every model.

Different products may use different:

  • Mortises

  • Backsets

  • Panel dimensions

  • Spindles

  • Cylinders

  • Mounting screws

  • Cable connectors

  • Battery systems

  • App platforms

  • Firmware configurations

Before training begins, identify the exact product model and approved configuration.

A training record should contain:

InformationExampleProduct modelApproved model referenceHardware revisionWhere applicableLock bodyApproved mortise or latchDoor applicationResidential entranceAppTuya / TTLock / otherFirmwareApproved version, where relevantTraining documentManual revisionAccessoriesApproved installation kitTrainerResponsible technical instructor

This information helps prevent technicians from using instructions intended for a different product revision.

For distributors managing repeat orders, product changes should also be reflected in the training materials.

4. Teach Installers How to Identify Door Types

Before handling tools, installers should learn how to evaluate the target door.

Common door categories include:

  • Wooden entrance doors

  • Steel security doors

  • Hollow metal doors

  • Aluminum-profile doors

  • Apartment entrance doors

  • Office doors

  • Outdoor gates

Each construction can introduce different installation requirements.

For example, a smart lock designed for one wooden-door preparation may not be appropriate for a reinforced steel door with a multipoint locking system.

Similarly, a standard wide-panel smart lock may not fit a narrow aluminum-glass door.

Training should teach installers when to proceed and when to stop for a compatibility review.

A professional installer must be able to say:

“This door requires a different lock configuration or additional technical approval.”

That decision can be more valuable than completing an unsuitable installation.

5. Train Installers to Take the Correct Measurements

Measurements should be part of the first practical training module.

Depending on the locking system, installers may need to confirm:

  • Door thickness

  • Backset

  • Mortise dimensions

  • Center distances

  • Door-edge preparation

  • Faceplate dimensions

  • Existing hole locations

  • Available panel width

  • Handle clearance

  • Opening direction

The exact measurement references should follow the applicable lock and door-hardware drawings.

A measurement without a clearly identified reference point can be misleading.

Practical Exercise

Give each trainee a representative door or training panel and an approved technical drawing.

Ask the trainee to:

  1. Identify the existing locking system.

  2. Record the relevant measurements.

  3. Compare the dimensions with the proposed product.

  4. Identify any incompatibilities.

  5. Explain whether installation may proceed.

The objective is not to memorize a universal backset.

It is to understand how to verify compatibility using the correct product documentation.

6. Include Mortise, Latch, and Cylinder Training

The mechanical lock body is fundamental to smart lock installation.

Training should cover the purpose and compatibility of:

  • Mortise

  • Latch

  • Deadbolt

  • Strike plate

  • Spindle

  • Cylinder

  • Handle

  • Relevant mounting hardware

Installers should understand how these components interact.

For example, a fingerprint can be recognized successfully while a misaligned bolt prevents the door from opening.

This does not necessarily indicate a fingerprint sensor failure.

The technician should recognize the difference between electronic authorization and mechanical door movement.

Training Objective

The installer should be able to explain why correct mortise fit and strike alignment are essential before electronic functions are evaluated.

7. Teach Installers to Recognize Restricted Door Applications

Some doors require additional professional evaluation before their hardware can be changed.

These may include:

  • Fire-rated doors

  • Required emergency exits

  • Doors with panic hardware

  • Certain commercial access-controlled doors

  • Openings subject to accessibility requirements

Training should teach technicians how to identify warning signs such as rating labels, specialized exit hardware, and building-specific door requirements.

A residential fingerprint lock should not be installed on a regulated commercial door simply because the mounting dimensions appear compatible.

Where applicable, the door, frame, locking hardware, and installation must satisfy the relevant codes, approvals, and manufacturer requirements.

If the installer cannot confirm that the proposed modification is permitted, the correct action is to stop and request qualified review.

For technical background, see the UL Solutions Doors and Related Hardware Application Guide.

8. Prepare a Standard Installation Kit

A distributor should identify the tools and accessories required for the actual approved models.

The training kit may include:

  • Product sample

  • Installation manual

  • Technical drawings

  • Representative training door

  • Measuring tools

  • Approved fastening tools

  • Required protective equipment

  • Correct mortise and strike

  • Spindles

  • Screws

  • Cylinder and keys

  • Batteries specified for the product

  • Compatible smartphone

  • Gateway where required

The exact kit depends on the product.

Do not provide trainees with an arbitrary assortment of screws or accessories and allow them to guess which components should be used.

Parts Identification Exercise

Ask trainees to identify each supplied component and explain its purpose.

They should also be able to distinguish required installation components from optional accessories.

This can reduce incorrect-part installations and unnecessary returns.

9. Use a Demonstration Door Before Real Customer Installations

A dedicated demonstration door or training panel is useful for installer education.

It allows trainees to practice under controlled conditions.

A suitable training station can help demonstrate:

  • Front and rear panel positioning

  • Mortise alignment

  • Cable routing

  • Spindle installation

  • Handle operation

  • Locking and unlocking

  • Battery placement

  • App setup

However, a demonstration fixture cannot reproduce every real-door condition.

After completing the basic training, installers should also evaluate representative door types used in their target market.

A trainee who can assemble a lock on a training board may still need supervision when working on an existing metal security door.

10. Build a Consistent Mechanical Installation Procedure

The installation SOP should follow the exact manufacturer's instructions.

As a general training framework, technicians should learn to:

Before Installation

  • Confirm the product model.

  • Inspect the package and accessories.

  • Check door compatibility.

  • Review existing door preparation.

  • Confirm the correct handling configuration.

  • Identify any restrictions or required approvals.

During Installation

  • Follow the approved mechanical assembly sequence.

  • Use the specified accessories.

  • Protect cables from pinching or damage.

  • Avoid forcing components into incompatible openings.

  • Maintain correct mounting alignment.

  • Follow the manufacturer's fastening instructions.

Before Electronic Configuration

  • Check handle movement.

  • Verify latch or bolt movement.

  • Confirm permitted mechanical-key operation.

  • Check the strike and frame alignment.

  • Verify the door closes and latches correctly.

A consistent mechanical process helps prevent electronic troubleshooting from being complicated by installation defects.

11. Teach Safe Cable and Connector Handling

Some smart locks use cables to connect front and rear assemblies.

Incorrect cable routing can create installation problems.

Training should explain:

  • Correct connector identification

  • Cable positioning

  • Avoiding trapped or pinched wires

  • Approved cable routing

  • Protecting connectors during assembly

  • Recognizing damaged components

Installers should not modify electronic wiring or connectors unless the manufacturer specifically authorizes the procedure.

If a connector does not fit, stop and verify the product configuration.

Forcing an incorrect connector can damage the assembly and complicate later diagnosis.

12. Teach Battery and Emergency Access Procedures

Installers should understand the selected model's power system before handing the lock over to a customer.

Training topics include:

  • Specified battery type

  • Correct battery installation

  • Battery compartment access

  • Low-battery indication

  • Applicable emergency-power method

  • Mechanical-key backup where provided

Do not use the same battery or emergency-access instructions for every smart lock.

A model with a mechanical key and emergency power input may have a different recovery process from another model.

Practical Assessment

Ask each trainee to demonstrate the approved battery replacement process and explain the model-specific emergency-access method.

The trainee should also be able to explain what the user should do when normal battery power is unavailable.

13. Train Installers on Tuya and TTLock Separately

Smart lock software platforms are not interchangeable.

If a distributor sells Tuya and TTLock products, installers should receive platform-specific training.

Training may cover:

  • Correct app identification

  • Device pairing

  • Administrator account setup

  • User enrollment

  • Credential management

  • Supported local functions

  • Gateway connection where applicable

  • Account transfer

  • Basic supported diagnostics

The exact workflows depend on the model, platform, and firmware configuration.

A technician should not assume that an operation learned on one app will work identically on another.

For more information about platform differences, see the SEGULOCK Tuya vs TTLock Smart Locks Guide.

14. Make Administrator Account Ownership Part of Training

Account ownership is especially important for project installations.

Imagine that a technician installs 40 smart locks in an apartment building using a personal app account.

The installation appears successful.

Six months later, the technician leaves the service company.

The property manager discovers that the main administrator account is still controlled by the former installer.

This creates an operational problem that could have been avoided during commissioning.

Training should define:

  • Who owns the main account

  • Who receives administrator permissions

  • Which access level installers require

  • When temporary installer access is removed

  • How management is transferred to the customer

  • How account information is handled securely

Never ask installers to collect permanent customer passwords or store access credentials in personal spreadsheets.

Use supported and authorized account-ownership procedures.

15. Include Gateway and Network Training

Some smart locks support local Bluetooth operation, while certain remote features require a compatible gateway or another network connection.

The training program should distinguish between:

Local device operation

and

Remote management functionality.

If the selected configuration uses a gateway, relevant topics include:

  • Gateway model compatibility

  • Power and network requirements

  • Supported pairing procedure

  • Lock-to-gateway communication

  • Appropriate placement

  • Network interruption behavior

  • Responsibility for ongoing network maintenance

Do not teach installers that every smart lock requires Wi-Fi.

Likewise, do not assume a gateway can serve a fixed number of doors in every building.

Site conditions and the selected system architecture should determine deployment.

For TTLock-based projects, refer to the SEGULOCK TTLock Gateway Guide.

16. Introduce a Mandatory Post-Installation Test

Installation is not complete when the lock is attached to the door.

The technician should verify that the system performs the required functions.

A practical test may include:

Test AreaInstaller Should VerifyMechanical operationHandle, latch, bolt, strike alignmentDoor operationOpens and closes normallyFingerprintEnrollment and authorized access, if supportedPINAuthorized code access, if supportedRFIDAuthorized card operation, if supportedMechanical keyBackup operation, where providedAppCorrect app and supported local operationGatewayRelevant remote functions, if includedBatteryNormal power indicationEmergency accessApproved model-specific procedureUser permissionsCorrect administrator and user rolesDocumentationInstallation and handover record completed

The final checklist should be customized to the actual product.

Do not mark a function as passed if the model does not support it.

Instead, record it as not applicable.

17. Teach Technicians to Test the Door Open and Closed

An electronic lock may behave differently when the door is closed.

When permitted by the manufacturer's test procedure, technicians should evaluate mechanical movement in a safe condition with the door open.

They should then verify normal operation with the door properly closed.

This helps identify issues caused by:

  • Strike alignment

  • Door movement

  • Frame contact

  • Excessive mechanical resistance

  • Incomplete closing

Testing must not leave occupants trapped or create an unsafe access condition.

For occupied properties, maintain an authorized means of entry and exit throughout the commissioning process.

18. Standardize Customer Handover

The installation is not fully complete until the customer understands how to operate the lock.

A handover should cover the functions included in the purchased product.

These may include:

  • Normal unlocking methods

  • How to lock the door

  • How to add or remove authorized users

  • How to replace batteries

  • How to use backup access

  • What depends on internet connectivity

  • Who controls the administrator account

  • Who to contact for support

For property projects, the handover may also require:

  • Door identification

  • Model and revision record

  • Administrator ownership confirmation

  • Gateway identification

  • Applicable maintenance instructions

  • Training of property staff

The installer should not retain administrator access unless there is an authorized and documented reason.

19. Create a Practical Installer Training Curriculum

Distributors can organize training into short modules followed by hands-on practice.

The following is an illustrative one-day program. It is not an official SEGULOCK course or manufacturer certification.

ModuleSuggested TimeMain ObjectiveProduct identification30 minutesRecognize models, parts and revisionsDoor compatibility60 minutesMeasure doors and assess suitabilityMechanical installation90 minutesComplete approved assembly on a training doorElectronic setup60 minutesConfigure supported access methodsApp and gateway setup45 minutesUnderstand applicable connectivityCommissioning and handover45 minutesTest the complete installationPractical assessment60 minutesDemonstrate competence

Total illustrative session: 6.5 hours.

Training duration should be adjusted based on model complexity, trainee experience, and regulatory or safety requirements.

A complex commercial access-control project may require specialized training beyond this introductory program.

20. Evaluate Installer Competence Before Field Deployment

Attendance alone does not prove that a technician can install a product correctly.

A distributor should assess practical competence.

A useful evaluation might include:

CompetenceAssessment MethodProduct identificationSelect correct model and accessoriesDoor measurementsRecord and interpret dimensionsCompatibility decisionsIdentify unsuitable installationsMechanical assemblyComplete supervised installationElectronic configurationEnroll authorized usersConnectivityDemonstrate required app or gateway functionsFunctional verificationComplete installation checklistHandoverExplain maintenance and backup accessDocumentationSubmit accurate installation record

Some criteria should be treated as mandatory safety gates rather than compensated for by a high total score.

For example, a trainee who cannot identify restricted fire-door or egress conditions should not be authorized to perform those installations independently.

Where local licensing or professional qualification requirements apply, internal training does not replace them.

Do not advertise an internal attendance certificate as a nationally recognized installer certification.

21. Example: Installer Assessment Form

A simple internal assessment can help supervisors record progress.

Trainee: ____________________

Training Date: ____________________

Product Model: ____________________

Trainer: ____________________

Assessment ItemResultIdentifies correct product configurationPass / RetrainMeasures target door correctlyPass / RetrainRecognizes prohibited or restricted workPass / RetrainSelects approved accessoriesPass / RetrainPerforms supervised mechanical installationPass / RetrainCompletes approved electronic configurationPass / RetrainDemonstrates required access functionsPass / RetrainExplains emergency accessPass / RetrainCompletes installation recordPass / RetrainPerforms customer handoverPass / Retrain

Supervisor Decision: Approved for defined tasks / Supervised practice required / Additional training required

Approval should specify the product models and work types for which the technician has demonstrated competence.

It should not be interpreted as unrestricted authorization for every door or locking system.

22. Keep Installation Records for Every Project

A useful installation record may include:

  • Customer or project reference

  • Door identification

  • Product model

  • Product SKU

  • Relevant serial or lot information

  • Hardware and firmware revision where available

  • Door type

  • Installation date

  • Installer

  • Approved accessories

  • Test results

  • Customer handover confirmation

  • Open issues requiring follow-up

These records become valuable when a customer requests technical support months later.

They can also help distinguish between installation-related problems and issues associated with a particular product revision.

For repeat orders, the distributor should remain aware of relevant supplier change notifications.

See the SEGULOCK Smart Lock Change Control & PCN Guide for a broader explanation of revision management.

23. Use a Train-the-Trainer Approach for Distributor Networks

A distributor operating across multiple cities may find it difficult to train every installer directly.

A train-the-trainer model can help standardize knowledge.

For example:

Supplier Product Information → Distributor Technical Lead → Local Installer Trainers → Authorized Installation Teams

To make this approach useful, the distributor should maintain:

  • Approved training documents

  • Model-specific manuals

  • Demonstration units

  • Training checklists

  • Practical assessments

  • Revision updates

  • Escalation contacts

Local trainers should not independently change technical installation procedures without proper review.

A centralized document system helps ensure installers in different regions use consistent information.

24. Include Retraining When Product Configurations Change

A product may be updated after its first commercial release.

Changes can affect:

  • Mortise

  • Spindle

  • PCB

  • Connector

  • App interface

  • Firmware

  • Gateway compatibility

  • Installation accessories

Not every change requires a complete new training program.

However, the distributor should evaluate whether the existing instructions remain accurate.

For example, a revised mortise may require an updated installation drawing and a short practical demonstration.

A new app workflow may require updated screenshots or a training video.

Train against the actual supplied configuration, not against an outdated model that merely looks similar.

25. Measure Whether Installation Training Works

A distributor should evaluate the training program after installers begin working in the field.

Useful indicators include:

First-Time Installation Success

How frequently are installations completed and accepted without unplanned corrective visits?

Repeat Visit Rate

How often must an installer return for an issue related to the original installation?

Missing Accessory Incidents

How frequently are installation kits incomplete or incorrectly selected?

Commissioning Failure Rate

How frequently does the installed lock fail the agreed functional checklist?

Training Assessment Results

Which skills require additional practice?

Customer Handover Complaints

How often do customers report that they do not understand basic operation or account ownership?

These metrics require clear definitions.

For example, an installation revisit caused by a later battery failure should not automatically be classified as an original installation error.

The purpose is to identify improvements, not simply rank technicians.

26. Common Smart Lock Installation Training Mistakes

Mistake 1: Training Only With Product Videos

Videos are useful, but they do not replace hands-on measurement and installation practice.

Mistake 2: Using One Manual for Different Models

Different hardware and app configurations may require different instructions.

Mistake 3: Ignoring Door Compatibility

A working smart lock cannot compensate for an unsuitable mechanical installation.

Mistake 4: Teaching Only the Electronic Features

Mortises, spindles, cylinders, and strike alignment are equally important.

Mistake 5: Allowing Unapproved Modifications

Door alterations must follow applicable product, building, and safety requirements.

Mistake 6: Skipping Administrator Account Handover

The correct customer or organization should control the installed system.

Mistake 7: Skipping Final Functional Testing

Installation should conclude with documented verification of relevant functions.

Mistake 8: Treating Course Attendance as Competence

Use supervised practical assessments where appropriate.

Mistake 9: Forgetting Product Revision Updates

Training materials must reflect significant hardware, software, or accessory changes.

Mistake 10: Ignoring Customer Feedback

Recurring installation-related complaints should lead to training or process improvements.

Smart Lock Installation Training Checklist for Distributors

Before launching a smart lock product line, use this checklist to review installer readiness.

Product Preparation

  • Approved smart lock model identified

  • Correct manual available

  • Product revision confirmed

  • Mortise specifications documented

  • Accessories identified

  • App platform confirmed

  • Emergency access instructions available

Door Compatibility

  • Door types understood

  • Door thickness measurement covered

  • Backset measurement covered

  • Mortise compatibility covered

  • Handle clearance covered

  • Fire and egress restrictions explained

  • Stop-work criteria defined

Hands-On Training

  • Training door available

  • Approved installation tools available

  • Mechanical assembly demonstrated

  • Cable handling demonstrated where applicable

  • Battery installation demonstrated

  • App setup demonstrated

  • Gateway setup demonstrated where applicable

Verification

  • Door operation tested

  • Unlocking methods tested

  • Mechanical backup tested where applicable

  • Account ownership confirmed

  • Connectivity tested where required

  • Installation record completed

Customer Handover

  • Customer trained

  • Administrator ownership confirmed

  • Temporary installer access removed where appropriate

  • Backup access explained

  • Maintenance instructions supplied

  • Support contact provided

Training Management

  • Practical competence assessed

  • Training scope documented

  • Model revisions tracked

  • Refresher training process defined

  • Installation problems reviewed periodically

The checklist should be adapted to the actual products, applications, and regulations.

FAQ: Smart Lock Installation Training

What is smart lock installation training?

It is a structured program that teaches installers how to assess compatibility, install approved smart lock hardware, configure relevant electronic functions, test the finished installation, and hand the system over to the customer.

Do smart lock distributors need installer training?

A structured training program can be valuable for distributors working with local installers, locksmiths, or technical service teams.

It helps make installation procedures more consistent and reduces reliance on informal product knowledge.

How long does smart lock installer training take?

Training duration depends on the product complexity and the installer's existing experience.

A simple product demonstration may be short, while a hands-on program covering several models, platforms, and door types may require much more time.

What should installers learn first?

Start with product identification, door measurements, and compatibility.

Mechanical suitability should be confirmed before electronic setup.

Can a mechanical locksmith install smart locks?

A qualified locksmith may already have important door-hardware skills, but should also understand the selected smart lock's electronic configuration, app, power system, and commissioning process.

Applicable licensing and product requirements must still be followed.

Do Tuya and TTLock require different installation training?

The physical installation may be similar for some products, but app pairing, administrator functions, gateway requirements, and user-management procedures should be taught for the exact platform and model.

Should installers receive a certificate?

Distributors may issue internal training completion records or task-specific competence records.

However, these should not be described as official manufacturer or regulatory certifications unless the relevant authorization actually exists.

Can training reduce smart lock returns?

Training may help reduce problems associated with incorrect installation, wrong accessories, configuration mistakes, and incomplete customer handover.

It cannot eliminate product defects or every field issue.

What should installers test before leaving the customer site?

Verify the applicable mechanical operation, electronic access methods, backup access, account ownership, connectivity, and customer instructions.

Document the results using the approved model-specific checklist.

What information should distributors request from a smart lock supplier?

Useful materials include product specifications, technical drawings, installation manuals, accessory lists, app instructions, gateway information, revision details, and approved troubleshooting procedures.

Build a Stronger Smart Lock Distribution Business Through Training

For importers and distributors, smart lock installation training is more than an internal technical activity.

It supports the entire product business.

A practical distributor workflow is:

Select Products → Test Samples → Prepare Training Materials → Train Installers → Assess Competence → Install → Commission → Handover → Improve

When installation procedures are consistent, distributors can better support:

  • Hardware stores

  • Locksmith networks

  • Smart home installers

  • Apartment projects

  • Rental-property operators

  • Commercial customers

The objective is not simply to install more locks quickly.

It is to ensure that the correct product is installed on the correct door, configured for the correct customer, and supported by useful documentation.

Build Your Smart Lock Product Line With SEGULOCK

SEGULOCK supplies smart locks and door hardware for importers, distributors, private-label brands, and project buyers.

When evaluating products for your local installation network, consider not only the unit price and unlocking functions but also the information your installers will need.

Prepare the following details when contacting a supplier:

  • Destination market

  • Target door types

  • Required smart lock models

  • App platform preference

  • Estimated order quantity

  • Installation and spare-part requirements

  • Manual language requirements

  • OEM or private-label needs

You can review SEGULOCK's factory and B2B cooperation information for an overview of its supply approach.

To discuss product configurations, documentation needs, samples, and a wholesale quotation, visit the SEGULOCK Catalog & B2B Quote page.

A well-trained installer does more than complete an installation. They help protect the distributor's reputation after the product reaches the customer.

Get in touch

Address

Room 3060, Area C, No. 544 YaYun Avenue, Dalong Street, Panyu District, Guangzhou, Guangdong Province, China

Contacts

Whatsapp+8613711061941

sales@segulock.com