Botou Sanyangtongtai Machinery Co.,ltd is a leading manufacturer for steel plate coiling machinery,cold-bending & rolling steel plate shaping machineries and automatic production lines.The products are mainly used in steel structure industry for producing C&Z type purlin,colored wall and floor protecting steel plate, thermal insulating plate and load-bearing plate of buildings, and other complementary thin wall cold-bending shaped seel plates,expressway railings, colorful decorating and protecting steel plates for high-grade steel stucture residendces.