Email Us


china fr4 pcb assembly

What is FR4? 

FR4 is the name of a type of epoxy glazing material. fr stands for flame retardant. 4 refers to the factors that differentiate it from other materials. FR4 means two things.

The material.

As a construction material, it refers to epoxy laminates reinforced with glass fibers. Used to make FR4 printed circuit boards.


China fr4 pcb assembly is also a unit of evaluation. Epoxy laminates are classified. This classification shows the basic quality of the epoxy resin board.

This classification helps to determine the quality of different types of materials and designs of slabs.

What is FR4 PCB Assembly?

A circuit board with FR4 is called an FR4 PCB (fr4 printed circuit board). China fr4 pcb board is a type of printed circuit board that mainly uses FR4 boards. Originally, FR4 was used as an insulating layer for the PCB. Next FR4 manufacturer adds a layer of copper to both sides of the FR4 board. This makes it a CCL (copper clad laminate). Thanks to FR4, CCL acts as an insulating material. FR4 gives PCBs their strength. In addition, they perfectly absorb moisture and resist fire. This is why these boards are very popular in the market. There is a high demand for FR4 for PCB assembly. FR4 printed circuit boards are compact and easy to design. FR4 boards are popular because they are cheap and can be used in many electrical devices, GreensTone is an professional China fr4 pcb board manufacturer which you can trust.

Uses and Applications of China FR4 PCB Assembly

China FR4 PCB Assembly is widely used in many complex devices due to its cost-effectiveness and ease of availability. FR4 circuit board manufacturing is a specialized process that requires expertise and precision. As a trusted FR4 manufacturer and contract electronics manufacturing factory, we use cutting-edge technology to produce high-quality FR4 PCBs that meet the needs of various industries. Our China FR4 PCBs are well-suited for applications that require endurance and durability.

For instance:

  • Screw terminal strips

  • Transformers

  • Relays of electric systems

  • Electric switches

  • Washers

  • Standoffs

  • Arc shields

Features of FR4 PCB Assembly to Consider When Choosing China FR4 PCB Board


The thickness of an FR4 sheet varies depending on your device design. normally, you will require an FR4 PCB with a thickness of 0.5mm to 6.4mm. 0.8mm,1.2mm,1.6mm,2.0mm is common to use.

Impedance Matching

The impedance matching is important in high-frequency PCB. It helps to maintain the function of the board of directors. It also determines the capacitance of the layers in multi-layered boards.

Space & Flexibility

When you design your board with FR4 material, you will find most of the engineers prefer thinner sheets as they take less space and are more flexible.

Weight of the FR4

The thickness of the board determines its weight. For products with lighter weight request, it’s better to choose FR4 boards with thinner thickness.

Thermal Conductivity

The value of the thermal coefficient of the dielectric constant is determine the temperature management of the FR4. However, FR4 is heat resistant so that it can be widely used.

China FR4 PCB Assembly Cases in GreensTone

smt pcb
smt manufacturer
smt in pcb
smt electronics manufacturing
smt control board
smt circuit board
smt circuit
smt board assembly
smt assembly supplier
smt assembly service
smt assembly manufacturer
smt assembler
smt  pth assembly
smd pcb manufacturer
pcb smt assembly
pick and place pcb assembly
prototype smt assembly
prototype smt pcb assembly
smd board assembly
smd pcb assembly
pcb pick and place service
pcb and smt
double sided smt assembly
assembled pcb smt

Yes, thanks for your update on the projects status,it’s good for me to make our order plan.

—— Pablo from Spain June 20th, 2019.

Your engineer check the files very carefully,thank you for it, it helps me a lot.

—— Mark from a leading LED strips supplier in Australia Match,8th 2018.

The goods arrived very well, the packing is good, thank you.

—— Antonio from Valladolid, Spain May 25th, 2017.

We've been worked with GreensTone for many years, there is no failure.

—— Wally Nunn from Australia---a leading Pool products manufacturer July13th, 2016.

I reached out to GreensTone Electronics to manufacture the circuit boards. After a few discussions, Rebecca could see the community focus of the project and went above and beyond to reduce costs, ensure delivery and filmed elements of the production for educational purposes. Manufacturing offshore isn't as easy as it appears on the surface so it was invaluable to have Rebecca believe in the cause and be an ally in the production working toward the same goal.

—— Mic. from Australia Feb. 10th, 2015, written on his Facebook.

Yes, thank you we received the 34x LC VMS TILE 1C REV A earlier this week. The assembly quality is very good.

—— Ruth from Australia April 9th, 2014.

Thank you for taking time to check it,you are very efficient.

—— Peter Astrom from Sweden Sep 8th, 2013.

Your engineer is very clever,thanks for the help to check the file's problem.

—— Tony from Australia July 21st, 2012.
Get in Touch With GreensTone
Start your contract manufacturing journey with GreensTone today. Simply fill out your details and we'll get in touch with you to discuss your manufacturing needs.
Contact Us
4F B5 XuJingChang Industry Zone HaoYe Rd. No.39, XinHe Street, FuYong District, Shenzhen, China