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About product and suppliers:
        Alibaba.com offers 1,222 hand crank mechanism products. About 48% of these are music boxes, 9% are pencil sharpeners, and 8% are telecommunication tower. 

A wide variety of hand crank mechanism options are available to you, such as mechanical jack, mechanical, and scissor jack. You can also choose from 11-20t, 1-10t, and >50t. As well as from free samples, paid samples. 

There are 1,234 hand crank mechanism suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of hand crank mechanism respectively. 

Hand crank mechanism products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 234 with ISO9001, 108 with Other, and 35 with FSC certification.