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Ningbo Zhenhai Guisi Zhaoyang Hardware Screw Factory
宁波市镇海区贵驷朝阳五金螺钉厂
Premium Supplier
14 Years
Main Products
Hexagon Bolt
Hexagon Socket-Head Cap Screw
Round Head Bolt
T-Bolt
Double-End Bolt
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shaft bolt
material
Alloy Steel
grade, rigidity
Grade 10.9 (HRC32~39)
Coating
electroplating
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