Ningbo Gangtong Zheli Fasteners Co.,Ltd.


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Our company is specializd in producing carbon steel fasteners,the main standard products including carban steel hex socket cap screws,hexagon head bolts,structural bolts,square bolts ,heavy hex bolts,threaded rod,hex nuts,heavy hex nuts etc,and non-standard screw according to drawing or samples from customers. Class:6.8 8.8 10.9 12.9 Size:M12--M64 The length is not limited.
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