Henan Hengchang Precious is a company that provides Precious metal, Petrochemical, Mining engineering and more. Henan Hengchang Precious is headquartered in CN HN. Henan Hengchang Precious has a total of 25 patents
Henan Hengchang Precious is in the industry of:Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers Nonferrous Metal (except Aluminum) Smelting and RefiningJewelry and Silverware Manufacturing
What technical fields has Henan Hengchang Precious researched?