OEM and ODM 4 Layer PCB Board Multilayer Circuit Board Assembly

OEM and ODM 4 Layer PCB Board Multilayer Circuit Board Assembly

♦ What Is 4 Layer PCB Board?

A 4-layer PCB is a printed circuit board that contains four conductive copper layers separated by insulating material (typically fiberglass and epoxy resin, like FR4). These layers are laminated together under heat and pressure to form a single, solid board.

Structure of a 4-Layer PCB:

1. Top Layer – Signal routing (components often placed here)
2. Internal Layer 1 – Ground plane (GND)
3. Internal Layer 2 – Power plane (VCC)
4. Bottom Layer – Additional signal routing

• Reduce electromagnetic interference (EMI)
• Improve signal integrity
• Provide stable power distribution
• Allow denser and more complex routing than 2-layer boards

♦ Types of PCB Assembly Services:​​

• • ​​Turnkey PCB Assembly​​: Full service (PCB fabrication + component sourcing + assembly).
  • ​​Partial (Consignment) Assembly​​: Customer provides components; the assembler handles soldering.
  • ​​Prototype Assembly​​: Low-volume assembly for testing designs.
  • ​​High-Volume Production​​: Mass production for commercial devices.

DQS Electronic Group is one of the leading EMS company in China, we provide PCB design, PCB manufacturing, PCB assembly service and testing. Welcome send us your Gerber file to get free quotation. Our email: info@dqspcba.com

♦ Technical Parameters

PCBA Prototype	Industrial Control PCBA	Telecom PCBA	Medical PCBA
Automotive PCBA	Consumer Electronic PCBA	LED PCBA	Security PCBA

DQS Electronic is located in Shenzhen, focusing on PCB Layout Design, PCB Fabrication, Electronic Components Sourcing, SMT, PCB Assembly and Testing. We are a one-stop EMS electronic manufacturing company committed to providing global customers with rapid prototyping and mass production.

Our products include single, double, multi, high frequency, aluminum base, copper base, FR-4 and other high precision circuit boards.

We have over 10 years of experience in serving many domestic and foreign brand customers in a wide range of fields such as Medical, Automotive, Industrial Automation, Artificial Intelligence, Smart Home, Security, Power and Communications, etc..