... Focus on researching and manufacturing of various polyurethane color steel panel, widely used in house, freezing house,clean room, ... used(-196~+200ºC)not contract and not embrittle at low temperature, law thermal conductivity,good insulation,good waterproofing ... Supervision Center GB8624-1997 standardPhenolic Foam Pre-insulated Ducting Panel Compounded color steel is of high strength, which takes ...