VDV company is devoted to improve the casting quality to meet the various customers’ requirements and develop the casting application fields. With the German imported spectral analyzer, may analyze Ni-base and iron-base alloy, nitrogen and so on, it guarantees the material quality complying with the international standard. The business operations as a whole, VDV company and Qingdao Zhonghe Precision Casting metal Co., Ltd. andQingdaoVastar IndustrialCo., Ltd. Are in a unified management system. Have done good work in precision casting mould, CNC machining , hand polishing and testing and assembly. We are specialized in manufacturing ball valves, bumps and other flow control parts, marine hardware, auto parts, food machine parts, medical instrument parts, architectural hardware parts and so on.