Insulation Paper, Polyimide Film, Pressboard manufacturer / supplier in China, offering Double Sides 18/18 1.6mm 43"X49" Fr4 Ccl for PCB, Phenolic Paper Xpc/Fr1/Fr2 Ccl Copper Clad Laminate Sheet for PCB, Brown/Black Bakelite Textolite Phenolic Cotton Fabric Laminated Sheet and so on.