... on researching and manufacturing of various polyurethane color steel panel, widely used in house,freezing house,clean room,garage ... and public places of entertainment.The combustion process of Phenolic heating insulting materials: 150ºC Long-term use of the ... Quality Supervision Center GB8624-1997 standardPhenolic Foam Pre-insulated Ducting Panel Compounded color steel is of high strength, which takes ...