Qingdao Sincerely Steel Co., Ltd. is one of the mainly steel holding mill in China which founded in the year of 1991,, covers an area of 150,000 ㎡ and have 350 workers, QINGDAO SINCERELY STEEL engaged in producing and exporting Galvanized Steel Coil, PPGI Coil, Galvalume Steel Coil, Tinplate, Color Coated Aluminum Coil, Corrugation Roofing Sheet.