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Precision SMT PCB Assembly
From Shenzhen, Trusted Worldwide

Professional PCB manufacturing, component sourcing, and full turnkey assembly services.
Joining the Kingsum Group in 2024 for better pricing, faster lead times, and expanded capabilities.

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Multilayer PCBs

Up to 8-layer HDI and complex stack-ups with ENIG, HASL, Immersion Gold finishes.

SMT & DIP Assembly

High-speed SMT lines with precision placement and reliable through-hole soldering.

Quick Turn Prototypes

Fast 24–72hr turnaround for prototypes with full testing and inspection.

About ShenZhen KaiZhuo Electronic

Founded in 2007, ShenZhen KaiZhuo Electronic Technology Co., Ltd (KAZ Circuit) is a professional and high-quality provider of Electronic Manufacturing Services (EMS) from China. With approximately 300 experienced employees, KAZ delivers reliable PCB manufacturing, component sourcing, and full assembly solutions to clients worldwide.

In 2024, KAZ joined the Kingsum Group (www.kingsumpcba.com), enhancing its market reach and capabilities in PCB manufacturing, box build assembly, and global logistics — offering better pricing and faster lead times without compromising quality.

  • ISO 9001 & RoHS Compliant
  • In-house Design & Engineering Support
  • Advanced Automated Production Lines
  • Full Turnkey and Consignment Options
Learn More on Official Site
PCB Assembly Line

Our Core Advantages

High Quality

Strict quality control system, professional test lab, RoHS compliance, and supplier capability assessments ensure every board meets international standards.

Advanced Manufacturing

Equipped with automated SMT lines, AOI, X-ray inspection, and reflow ovens for consistent, high-volume production with tight tolerances.

Design & Development

In-house engineering team supports product development, DFM analysis, and custom PCB design for optimal manufacturability.

100% Service

Flexible packaging, FOB/CIF/DDU/DDP shipping, and responsive support for bulk and custom small orders.

Our Products & Services

Immersion Gold PCB

Immersion Gold 1u 1oz Multilayer PCB

High-reliability computer circuit board with ENIG finish, ideal for high-speed digital and industrial applications.

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4-Layer 2oz FR4 PCB

4-Layer 2oz FR4 PCB Assembly

Robust 1.6mm thick board with heavy copper, perfect for power electronics and LED lighting systems.

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Smart Meter PCBA

Smart Meter PCBA Manufacturing

Custom PCB assembly for power meters, SWR meters, and energy monitoring devices with high precision.

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6-Layer ENIG HASL PCB

6-Layer ENIG/HASL PCB Design

ODM service for complex customer-specific designs with dual finish options and tight impedance control.

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Mini Computer PCB

Mini Computer PCB Design 1.6mm

Compact, high-density PCBs for embedded computing, IoT devices, and miniaturized electronics.

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HDI 8-Layer PCB

8-Layer HDI PCB Assembly

High-Density Interconnect boards for advanced consumer electronics, medical devices, and telecom.

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LED Lighting SMT PCB

LED Lighting SMT PCB Board

White silkscreen, green soldermask, 2oz copper — optimized for high thermal performance and longevity.

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Custom Prototype PCB

Custom Prototype PCB Assembly

Fast-turn SMT and DIP assembly for prototypes, with full testing and documentation support.

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Why Choose SMT-PCBAssembly?

Fast Global Delivery

DDU, DDP, FOB, and CIF shipping options with reliable logistics partners for fast and secure delivery worldwide.

Component Sourcing

Full BOM management and component procurement with counterfeit-free guarantee and supply chain transparency.

Rigorous Testing

AOI, X-ray, ICT, and functional testing ensure 100% reliability and performance of every assembled board.

ODM & OEM Support

From concept to production, we support custom designs, NRE reduction, and full product lifecycle management.

Scalable Production

Seamless transition from prototype to mass production with consistent quality and on-time delivery.

Multilingual Support

English, German, French, Spanish, Russian, Portuguese, Japanese, Arabic, and more — we speak your language.

17+
Years in Business
300+
Skilled Employees
8
Layers Max (HDI)
24-72hr
Prototype Turnaround

Frequently Asked Questions

What types of PCBs do you manufacture?

We produce single-sided, double-sided, multilayer (up to 8 layers), HDI, heavy copper (up to 6oz), and flexible PCBs with various finishes including ENIG, HASL, Immersion Gold, and OSP.

Do you offer turnkey PCB assembly?

Yes, we provide full turnkey services including component sourcing, SMT/DIP assembly, testing, and packaging. We also support consignment and hybrid models.

What files do you need for a quote?

Please provide Gerber files, BOM (Bill of Materials), and assembly drawings. For prototypes, we can assist with DFM analysis and component substitution.

What is your lead time for PCB assembly?

Prototype: 24–72 hours. Mass production: 7–15 days depending on complexity and volume. We offer expedited options upon request.

Are you RoHS compliant?

Yes, all our manufacturing processes and materials comply with RoHS and environmental safety standards. Certifications available upon request.

Contact ShenZhen KaiZhuo Electronic

For quotes, technical support, or project consultation, visit the official website to connect with our team.

Sales Contact

Name: Mrs. Helen Jiang

Email: [email protected]

Phone (WhatsApp): +86-18118756023

Visit Official Website to Contact
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