spray foam insulation 1.rock wool slab is widely uesd for insulation/sound absorption 2.it ... spray foam insulation 1. IntroductionThe rock wool products take basalt as its main raw materials, after the towering stove is melted, use ... manufacture kinds of products, such as rock wool board, rock wool pipe, rock wool blanket , rock wool elbow, tile, and so on. 2. Specification ...