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.
Ferrofluid Bolt Kit – https://amzn.to/2jfYN5d
Giant Whoosh Bottle Experiment – https://www.youtube.com/watch?v=yl89heCsBpQ
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