Box Build Assembly & System Integration

PCBA Installation • Enclosure Assembly • Internal Wiring • Final Testing & Packaging

Leader Global Electronics assembles customer-designed electronic products in Taiwan, combining PCB assemblies, enclosures, cables, connectors, and supplied or approved modules.

We work from your mechanical drawings, assembly instructions, wiring requirements, and test procedures. The agreed scope can include PCBA installation, cable routing, firmware loading, finished-product testing, labeling, and packaging.

We can quote assembly using customer-supplied PCBAs and materials, or a broader scope that includes PCB assembly and material procurement.

Request a Box Build Quote
Send the complete box build package listed below to sales@leaderelec.com.tw.

Box Build Manufacturing Capabilities

Depending on the product, our box build services can include:

PCB Assembly & System Integration
Mechanical Enclosure Assembly
Cable & Wire Harness Installation
Connector & Interface Assembly
Display, HMI & Touch Panel Integration
Power Supply & Battery System Integration
Fan, Heat Sink & Thermal Component Installation
Firmware & IC Programming
Functional Testing
Product Labeling
Final Inspection
Packaging

PCB assembly, system integration, testing, and final assembly can be coordinated within the same manufacturing program.

Required Files for a Box Build Quotation

Please provide a complete RFQ package for the requested box build scope:

Complete product BOM with part numbers and quantities per unit, identifying customer-supplied items and items to be purchased by Leader Global.
Box build assembly drawings and work instructions.
Mechanical drawings with dimensions and tolerances, plus STEP files where applicable.
Cable and wire harness drawings, connector details, and wiring requirements.
Quantities to be quoted and target delivery schedule.
Material supply model: turnkey, partial-turnkey, or consigned.
Mandatory sourcing restrictions or designated suppliers, where applicable.
Applicable document revisions and product configurations or build variants.
Firmware programming required: Yes / No.
Functional testing required: Yes / No. Please describe the required test scope.
Estimated programming and testing time per unit, if known.
Programming tools and test fixtures: customer-supplied or to be quoted, if required.
Labeling, cosmetic acceptance, packaging, and supplied-accessory requirements.

Firmware and software files are not required for the initial quotation. If programming or testing is required, please describe the scope and whether the necessary tools and fixtures will be customer-supplied. If fixture development is required, please provide the test requirements for a separate quotation.

Production firmware, programming instructions, and detailed test procedures and acceptance criteria can be provided after order confirmation and must be confirmed before the relevant production activities begin.

If PCB assembly is included, also provide the electronic BOM, Pick & Place / Centroid data, and PCBA assembly drawings. If PCB fabrication is included, provide Gerber and drill files, PCB specifications, and stack-up where applicable.

If you supply completed PCBAs and request final product assembly only, PCB fabrication files are not normally required unless needed for a specific agreed operation.

We begin quotation preparation once the required quotation information is complete and the assembly and testing scope is confirmed.

Send your complete RFQ package to sales@leaderelec.com.tw.

An NDA can be arranged before you submit confidential files.

Engineering Review Before Production

Before production, our engineering team reviews the approved manufacturing documentation and customer-defined assembly requirements that affect the box build process.

Typical review items include:

PCB and PCBA Specifications
BOM & Manufacturer Part Numbers
Mechanical Drawings & STEP Files
Enclosure Dimensions & Clearances
Assembly Drawings
Cable & Wire Harness Drawings
Connector Locations
Cable Routing
Power Supply or Battery Installation
Fan, Heat Sink & Thermal Component Requirements
Firmware Programming Requirements
Functional Test Requirements
Assembly Sequence
Fixtures & Tooling
Labeling & Packaging Requirements

Issues affecting assembly, programming, testing, inspection, or packaging can be discussed before materials are purchased and production is scheduled.

Mechanical & System Integration

System integration is reviewed at the complete product level.

Depending on the design, this may include:

PCBA Mounting & Clearances
Enclosure Fit
Connector Accessibility
Cable & Wire Harness Routing
Display & HMI Installation
Power Supply or Battery Installation
Fan & Heat Sink Installation
Thermal Interface Material Installation
Fasteners & Mounting Hardware
Final Assembly Sequence

Mechanical and assembly requirements are reviewed against the approved customer documentation before production.

Cable & Wire Harness Integration

Cable and wire harness installation can be incorporated into the box build process.

Depending on the product, this may include:

Internal Cable Installation
Wire Harness Installation
Connector Mating
Cable Routing & Retention
Terminal Assembly
Strain Relief
Cable Labeling
Continuity Verification

Cable drawings, connector information, wire specifications, and assembly requirements should be included in the manufacturing package where applicable.

Firmware Programming & Product Configuration

Firmware and IC programming can be integrated into the manufacturing process.

Available support may include:

MCU Programming
IC Programming
Firmware Loading
Product Configuration
Firmware Version Control
Programming Verification

Approved programming files, firmware versions, programming instructions, and verification requirements must be confirmed before programming begins.

Functional Testing

Functional testing can be performed after PCB assembly or after final product assembly according to the product and customer requirements.

Available testing support may include:

Power-On Verification
Functional Testing (FCT)
Firmware Verification
Cable & Interface Verification
Display & HMI Verification
Communication Interface Testing
Power Supply Verification
Battery System Verification
Final Assembly Inspection
Customer-Defined Test Procedures

For customer-specific testing, our engineering team can review test points, operating conditions, required measurements, communication interfaces, test procedures, fixtures, and pass / fail criteria.

Existing customer test fixtures can be incorporated where applicable. Custom production test fixtures can also be developed according to agreed test requirements.

Prototype, Pilot & Repeat Production

We support box build projects from prototype and pilot builds through low-to-medium volume and repeat production.

For early builds, assembly sequence, mechanical fit, cable routing, programming, functional testing, fixtures, labeling, packaging, and manufacturing documentation can be reviewed before the product moves into repeat production.

For established products, material planning and production scheduling are reviewed according to order quantity, forecast requirements, component lead times, testing requirements, and delivery schedules.

Supply Chain Support

Depending on the project, we can coordinate sourcing for:

PCBs
Electronic Components
Mechanical Enclosures
Cable Assemblies & Wire Harnesses
Displays & HMI Modules
Power Supplies
Battery Packs
Fans & Thermal Components
Custom Mechanical Parts
Labels & Packaging Materials

Projects can be managed as turnkey, partial-turnkey, or customer-consigned programs.

Customer AVL, AML, and designated suppliers can be followed where specified.

Alternative components or materials require customer review and written approval before purchase or use.

Document & Revision Control

Box build projects may combine electrical, mechanical, firmware, assembly, and test documentation.

Production documentation may include:

BOM
Gerber Files
Pick & Place Data
PCB Assembly Drawings
Mechanical Drawings
STEP Files
Cable & Wire Harness Drawings
Firmware Files
Programming Instructions
Functional Test Procedures
Assembly Work Instructions
Label Files
Packaging Specifications
ECO / ECN Documentation

Production is controlled according to the approved project revision.

Changes affecting materials, assembly, programming, or testing are reviewed before implementation.

Quality Control

Inspection and quality requirements are defined according to the product, customer specifications, and manufacturing requirements.

Depending on the project, inspection may include:

Incoming Quality Control (IQC)
PCBA Inspection
Mechanical Assembly Inspection
Cable & Wire Harness Verification
Programming Verification
Functional Testing
In-Process Quality Control (IPQC)
Final Quality Control (FQC)
Outgoing Quality Control (OQC)

Leader Global Electronics operates under:

ISO 9001 — Quality Management System
ISO 14001 — Environmental Management System
ISO 13485 — Medical Device Quality Management System

OEM Products We Support

Our box build and system integration services support OEM electronics including:

Industrial Electronics & Automation
Embedded & MCU-Based Products
Battery Management Systems (BMS)
Power Electronics & Power Conversion
IoT & Connected Devices
Communication & Networking Equipment
Industrial Displays & HMI Systems
Medical & Monitoring Electronics
Test & Measurement Equipment

Customer designs, manufacturing files, and technical documentation are treated as confidential and used only for project evaluation and manufacturing support.

Typical Box Build Manufacturing Workflow

Engineering Review → Material Preparation → PCB Assembly → Mechanical Assembly → Cable & Wire Harness Integration → Firmware Programming → Functional Testing → Final Inspection → Labeling & Packaging → Delivery

The exact manufacturing flow is defined according to the product design, sourcing model, assembly requirements, programming requirements, test procedures, and production stage.

Box Build Assembly FAQ

Can you provide PCB assembly and box build assembly together?

Yes. PCB fabrication, component sourcing, SMT/THT assembly, programming, testing, and box build assembly can be coordinated within the same manufacturing program.

Can you install cables and wire harnesses?

Yes. Cable and wire harness installation can be incorporated into the box build process according to customer drawings and specifications.

Can you provide firmware programming and functional testing?

Yes. Firmware and IC programming, product configuration, functional testing, customer-defined test procedures, and test fixture integration can be incorporated according to project requirements.

Can you source the materials for a complete box build?

Yes. Depending on the project, we can coordinate PCBs, electronic components, mechanical parts, cables and wire harnesses, displays, power supplies, battery packs, thermal components, labels, and packaging materials.

Request a Box Build Assembly Quote

For box build assembly and system integration projects, please send your complete manufacturing files and production requirements.

Email: sales@leaderelec.com.tw

NDA available upon request.

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