Galvanized umbrella roofing nail with ISO 9001 certificate

Diamond Group which is aiming to research and develop automatic machine and produce relevant products, is composed of Shijiazhuang Cross Automatic Machinery Company,Hebei Jushan Metal Products Company and Hebei Diamond Wire Mesh Products Company. Shijiazhuang Cross Automatic Machinery Company which is originated from the Sub-branch of Hebei Jushan Metal Products Company has been running for 4 years. This company is a research-oriented manufacturer. We have designed and dev...