Professional Manufacturers Electrical F-R4 Epoxy Fiberglass Insulation Sheet Board

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US $2.5-35 / Pieces | 10 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
FR4 Epoxy Insulation Board
Insulation Sheet, FR4 Insulation Sheet
Composite Polymer, Epoxy resin , Glass fiber cloth
High Temperature
Rated Voltage:
Tensile Strength:
Standerd Size:
41" x 49" (1030mm x 1230mm) /ODM
Yellow / Light Green / Transparent
Sheet or Customized
Bending strength:
Dielectric constant:
Impact Voltage:
50000 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
1. Wooden pallet with carton.
2. Plastic pallet with carton.
3. Wooden wooden pallet with wooden case.
4. According to customer requirements.
Lead Time :
7 days after order confirmed

Jiangmen Longxing Electronic Materials Co.,ltd>>>

We insist on “Super quality and customer satisfaction” as our core values!

Our company main products Insulation Laminated Board,  Copper Clad Laminated Sheets,   Aluminum Laminated Sheets(High Board, Middle Board, Ordinary Board),

Printed Circuit Board(LED Bar PCB,  Electronic Circuit Board). 

We provide One-stop service for you !

Product Description

 Professional Manufacturers Electrical F-R4 Epoxy Fiberglass Insulation Sheet Board 

FR-4 (or FR4) is a grade designation assigned to glass-reinforced epoxy laminate sheets, tubes, rods and printed circuit boards (PCB). FR4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
"FR" stands for flame retardant, and denotes that safety of flammability of FR4 is in compliance with the standard UL94V-0. FR-4 is created from the constituent materials (epoxy resin, woven glass fabric reinforcement, brominated flame retardant, etc.) by NEMA in 1968.
FR-4 Epoxy Fiberglass Sheet is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios. With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this grade for a wide variety of electrical and mechanical applications.

Feaures Application

· Non-absorbent, Non-conductive



· High strength , good insulation properties



· Wear-resisting and thermostable characteristic



· Excellent electrical, mechanical and processing properties


 Used in Electric insulation component.

 Used in mechanical, electrical and electronic high insulation structure parts. 

 Used in high-performance electrical insulation requirements. 

 General machines parts and gear, generators, Pads, base, baffle.

 Generator, transformer, fixture, inverter, motor.


  Our Advantage 

 >>>>>>Our operation is principle "win-win situation"!<<<<<<

The price of product is  Cheaper  than that of peers!!!

The quality of product is  Better  than that of peers!!!

 Product Specification 

Base Color

Yellow , Light Green , Transparent


Glass fabric cloth, epoxy resin


Stand size 41" x 49" (1030mm x 1230mm). We can customize for you.

PerformanceThe plate should no bubble, pucker, cracking or other defects, e.g. Scratch, indentation, ripple, irregular
color etc. But allow exist some spots.
CharacterHigh mechanical performance under medium temperature, good electrical performance stability under high
temperature, resist to acid and alkali, corrosion resistance.

 Note! ! ! ! More sheet size ,thickness, color and level could be Customize upon request.



standard color yellow, green
Fire Retardancy Grade: --UL94-V0
Flame Resistance:°C170-180
Voltage Resistance(penetrating)KV/mm12
Arc ResistanceS60-80
Volume resistivity:Ω*cm10 ^6
Surface resitance:Ω*cm10 ^6
Compressive Strength(Vertical):MPA≥350
Anti-impact intensityKJ/ m2≥33
Bending strengthkg/mm2≥340
Dielectric constant (1MHz) :/5.4
Adhesive strength:kg700-900
Compressive strength(Horizontal):kg/mm220-24
Water absorption rate:%0.07-0.12


We welcome more domestic and overseas customers to visit us for business negotiation. At the same time, we are very welcome you or your chinese agency to visit our factory, and We can check the further details. 


Our Services

 Customize Service  

We have our senior engineers team and introducing the advanced technology and equipment

(carving machines, CNC machine and machining center,Lathe,Milling machine, routing machine,threading machine,board cutting maching etc.)

to make products according to costomer drawing ,data ,or samples and so on.


Click here and mail to us now!

All kind of designs can be produced according to your requirements.

Company Information

We have good credit and own an excellent production team ,we also cooperate with numerous customers and suppliers. Our Main markets are North American, Southeast Asia, South Asia, South American, Southeast Asia,etc.Welcome more domestic and overseas customers to visit us for business negotiation.

We own professional design engineers and strictly quality control rules and regulations, skilled and experienced manufacturing team and mature processing, advanced machines and testing instruments.


Packaging & Shipping


1. Q:Product price a bit Lower than other Chinese suppliers?

    1) Really! Because we own reliable sources of high and cheap quality raw materials.

    2) To meet the requirement of different customers and areas, our factory manufactures various kinds of quality for each item at a wide range of prices. We can offer the products of different quality levels depending on customers target price.

    3The larger the volume is, the more discount you can enjoy,we hope for longterm cooperation.


2. Q:How long is your delivery time?

   1) Generally it is 5-10 days if the goods are in stock.Or it is 15-20 days if the goods are not in stock,it is according to quantity.


3. Q: How can I get a sample?

    1) Normally small samples (sizes not larger than 150*150mm) can be sent free of charge and customers just need to bear a little shipping.


4. Q: How about the service Longxing offered to the customers?

    1) If you have any questions about our products or company, do not hesitate to send us your inquiry to our customer service representatives. Your satisfaction is our pursuits.



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