... coating, putty, plastic casting polyester, frp, SMC, radome, synthetic foam, adhesives, printed circuit board substrate, RTM, bowling, fan blades, ... , golf, sealant, pipeline insulation materials, artificial marble, PVC foam, low density oil drilling, light cement, and other deep- ... wheels, tools, etc.;Rubber with glass microsphere is a kind of good high-pressure, wide-band and sound-absorbed material ...