How much is the foaming agent for door and window engineering? Which brand is more durable, good quality and good brand?

You can consult Shanghai Yusheng Sealing Material Co., Ltd. (producing Sanles styrofoam) with good quality (good viscosity, high strength after curing, good suspension and good color) and good brand (at present, most domestic styrofoam manufacturers mainly produce recycled rubber, which can't be good rubber. Yusheng manufacturer is the maker of styrofoam industry standard. Sanles brand 15 years old), good cost performance (one bottle is more than two bottles on the market. )