Qingdao Double Grand Metal Products Co., Ltd was established in 2008 , located in the Economic development Zone of Jimo City , Qingdao , China .Specializing in steel structure workshop , warehouse , prefabricated house , steel structure material , building hardware , electric hardware , steel stamping and welding parts. In recent years, the products exported to Asia, Europe, Africa, Australia, South America and other international and regional. We have full range of steel structure production line and strong technical teams , can design and fabricate for you all kinds of steel structure workshop , warehouse , plant , hanger , prefabricated house etc and C purline , Z purline , EPS sandwich panel , Mineral-Wool Sandwich panel Corrugated wall and roof sheet etc We also have CNC laser cutting machine, vertical machining centers, CNC bending machines and CNC continuous mode of production lines, advanced equipment, hardware products for customers design and production of architectural hardware, electrical hardware and stamping welding. Since its establishment, we adhere to the "quality first, customer first" philosophy, has won the trust of our customers, and passed the ISO9001-2008 quality system certification in 2009 . "Join hands with Double Grand win the future together �, we will adhere to provide you with first-class products, first-class service, and development with domestic and foreign customers, and work together to create a better future.