... manufactrer of prafabricated workshop, warehouse, steel factory plant, showroom building,metal farm and other steel frame construction sheds since 2002 ... in 2002, located in Qingdao, Shandong Province, China, covering about 15,000 square meters in total, the first company ... x eave height crane (if have) span, light height Roof and wall materialoption 1: color corrugated steel sheet (cheaper) ...