Qingyun Huihuang Exact Casting Co.Ltd（www.sdhhcasting.com）. was founded in 2004, is located in Qingyun county the Bohai economic development zone Shandong Province, covers 13,000 square metres. It is about 80Km from our company to Tianjin port. The traffic is very convenient. Huihuang has a professional engineer team, they can give best service during all the manufacture process. We have ability of designing tooling, and ability of machining, and the surface treatment. Our production capacity is 3000 tons of each kind product per year.