... powder 1, Product name: silicone sheet (Silicon sheet)2, Brand: ShinEtsu3, electrical conductivity (HC series) silicone sheet features:Pressure Consistencygood heat ... , it said that black, excellent heat resistance, antistatic propertyExample: HC-20AS => thickness of 20MM, dark blue, no powder6, ... -sided pattern, and no powder7,the product list:HC,HC-S, HC-A, HC-AS, HC-TS silicone rubber sheet