... ,ISO9001:2000 certification. 2,Over 14 years experience in metal bending parts. 3,OEM order is welcome. Qingdao lianhai hydraulic co ... ., ltd. is specialized in the large-scale welding, stamping, bending, punching, steel structure and all kinds of special-shaped pieces ... and processing with supplied drawings. For the metal bending part ,the details as follows:1.Over 14 years experience ...