... steel profiles,drywall profiles,main channel 38*12,furring channel35/50*22*13*68,wallangle25*25,30*30,stud38/50/63/70...track40/ steel profiles ... ,drywall profiles,ceiling structural profilesmain channel 38*12,furring channel35/50 ... 65/72/77/92/102 1,ZINC:40-275G2. Galvanized steel profile is absolute dampConfirm, heat insulation, high durability, ...