... ,silicon dioxide,supramoly,graphite,polyphenyl ester and carbon fibre with high intension into F4 resin to enhance mechanical intension, ... abrasion-proof performance.2,usageIt is applied for airproof of oxygen-generator , compressor and other machine.3,specification Form a complete ... compressor factory,Kaifeng air switch equipment factory,Hangzhou oxygen-generator,Harerbin oxygen-generator an so on.