Glasswool is undoubtedly an insulating materials produced from glass fibers, which is produced by melting glass at large temperatures and then drawing it into high-quality fibers.Sebenarnya hanya sedikit sekali kekurangan yang didapatkan apabila menggunakan steel grating ini. Selebihnya kualitasnya cukup bagus dan sudah banyak yang menggunakan anta