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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
13 Years
Main Products
Hexagon Bolt
Hexagon Socket-Head Cap Screw
Round Head Bolt
T-Bolt
Double-End Bolt
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Socket flat head screws
(DIN 7991 - 1986)
主打
grade, rigidity
Grade 8.8 (HRC22~34)
Coating
zinc plated color
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ASME B 18.3 - 2012
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