宁波市镇海区贵驷朝阳五金螺钉厂
Ningbo Zhenhai Guisi Zhaoyang Hardware Screw Factory
宁波市镇海区贵驷朝阳五金螺钉厂
T-bolt (GB 37 - 1988) 主打
material Alloy Steel
grade, rigidity grade 10.9
Coating black oxide coating