Ningbo Ruiyi Metal Products Co., Ltd. is a professional China Countersunk machine screw Suppliers and Stainless Steel Countersunk machine screw Factory. The company has a total investment of 20 million, covering an area of more than 50 acres and a factory area of 20,000 square meters. It is one of the domestic high-quality fastener manufacturers. The company has passed ISO9001:2008 international quality system certification and is an export-oriented enterprise with self-operated export rights.
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Norm: |
DIN965, ANSI/ASME B18.6.3 |
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Grade |
SS410, A2, A4 |
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Surface |
Brass Plated |


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Phone: +86-18268538885



