QIAN STEEL INDUSTRY established in 2012, it′ S a professional manufacturer that are engaged in research, development, production and service of PPGI/prepainted galvanized steel coils/sheets, PPGL/prepainted galvalume steel coils, , roof GI/Galvanized steel coils/sheets, GL/Galvalume steel coils/sheets, and Corrugated/Trapezoidal steel roofing sheets,