Cheng Hai established in 1986 had over 30 years of expertise and experience in Powder Metallurgy.Powder metallurgy industry is a combination of funding and process ...

Jiangxi Road, Qingdao, Shandong, China

Tsingtao Newunion Import & Export Co., Ltd. is one of biggest man ufacturers and exporters with about twenty years of experience in the production and export trade. We specialize in hardware, ...