We, Qingdao Golden-Ring industrial,.LTD(T?V certified) is a company specialized in exporting business for worldwide mechanical(casting/forging/machining/tooling)engineering OEM market. With the experience about 11 years in this field, we are recognized by more and more specialised partners. With the experience with ZF/JOST/SIEMENSE/LAPP/...in Germany/USA market, we know most of the key points to OEM market and we are just under growing.