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PEI is also known as polyaziridine. A water-soluble high molecular polymer. Colorless or pale yellow viscous liquid, hygroscopic, soluble in water, ethanol, insoluble in benzene.

Fr4Product Name | PEI sheet |
Material | PEI Ultem |
Color | Amber |
Size | 1000*620mm*mm |
Thickness | 10-80mmmm |




Commercially available products are usually aqueous solutions with a concentration of 20% to 50%. The degree of polymerization used in the paper industry is around 100, and its aqueous solution is positive. The pH value of a 5% aqueous solution is 8 to 11, and it will gel in the presence of acid. Polyethyleneimine has high reactivity, can react with hydroxyl groups in cellulose and cross-link polymerization, so that paper has wet strength and dry strengthening effect. The presence of any acids, bases and aluminum sulfate will affect its wet strength and retention.

Cutting Processing
Carving Processing
CNC Processing
Shenzhen Xiongyihua Plastic Insulation Limited was established in 2006 in Shenzhen, after more than decades of continuous efforts , has developed into a professional integrated manufacturer of specializes in production and development Engineering Plastic and Insulation Plastic ,is the most complete varieties. We have automatic dipping production lines, CNC carving machine and laser engraving machine, along with several saws, milling, planing,grinding, drilling, tapping, punching, cutting and other machining large production equipment.
Our main products :
1.Insulation Plastic Series : 3240/FR-4/G10 Epoxy Fiberglass ,Bakelite,3025 Phenolic Cotton Cloth Laminated,3021 Phenolic Paper Laminated,High Voltage Insulation Plastic.
2.Engineering Plastic Series: PA6/MC Nylon ,POM, PTFE,PVC,PE,PU,Acrylic,ABS and so on.
3. Insulation Machining Parts Series : Customized according to the customers' drawings and designs,welcome to contact us for more details.
Our well-equipment facilites and excellent quality control throughout all stages of production enables us to guarantee total customer satisfaction.
As a result of our products and outstanding customer service, we have gained a global sales network reaching India, Vietnam, Thailand, Indonesia, Philippines, Malaysia, Turkey, Pakistan, Dubai, and some other countries from European, like Brirain, France and German. And America, Australia, etc,enjoying great reputation in plastic industry.
If you are interested in doing business with us, freely send your inquiry and warmly welcome to visit our website to check more information and products details.
Our experienced and knowledgeable staff will meet your needs and exceed your expectations.
Our Workshop
Our Warehouse
Our Team

Packing Details : Cuatomized packing can be acceptable
Delivery Details : 3-10 days after order




1.Reply your inquiry within 12 hrs
2.Any professional question would get a professional answer
3.Dimensions customized is acceptable
4.Free sample is avaliable
A: We are factory.
A: 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.
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
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