HSD steel founded in April 2004, is located in Langfang, Hebei. The company is an independent legal entity after reintegration of staffs, property and resources of original Hongchang Company. With the trade of zinc-coating, color-coating and sheet, the company also performs well in contour tile series, C and Z type steel series, composite sheet and rock wool sheet, building fence and mating products. The company is top products polyphenyl composite sheet and rock wool composite board has high quality and reliability, and are favored by giant corporation buildings in home and abroad. The company is sales area keeps expanding and its products not only meet domestic demands, but also are sold in Africa. After a 10-year development, the company ranks among the best by its quality products and perfect service, and has an average of increase per year 15%--30%.