Rock wool sandwich panel for roof, 50mm/75mm/100mm/150mm Australian Style Z Lock Fireproof/Acoustic Absorption Rockwool Sandwich Panel for Wall and Roof
C channel is made of galvanized steel strips by the method of cold-bending formed.The surface treatment is galvanized or bared. It has many advantages compared with traditional structural steel, such as light weight, excellent performance cross-section, high-strength and so on.