HYG Heat Resisting Rock Wool product is made from high quality basalts by melting, spinning into fibers and thermal curing processes. The main Ingredients are Al2O3, SiO2, Fe2O3, CaO, MgO etc. It can be coated with glass cloth or aluminum foil fiber cloth according to the requests of clients. It’s mainly used as the insulating and fireproof materials at cabin inner surfaces, stiffeners (T steels and ball steels) etc.