website:https://www.jhmindustry.com/
Shanghai Jian & Mei Industry and Trade Co., Ltd. is the company which manufacture and export fasteners and metal hardware, founded in 2006, with import-export authority. Now, 80% products export to all over the world and 20% sell in domestic market.
Big bolts on steel beams. The steel beams have big bolts which was tightly secured so it wont come off and cause accidents. A set of rectangular metals.
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