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About product and suppliers:
        Alibaba.com offers 3,087 machine screw jack products. About 33% of these are car jacks, 15% are speed reducers, and 4% are ladder & scaffolding parts. 

A wide variety of machine screw jack options are available to you, such as worm, bevel / miter, and helical. You can also choose from free samples, paid samples. 

There are 3,087 machine screw jack suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of machine screw jack respectively. 

Machine screw jack products are most popular in Domestic Market, North America, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 1,507 with ISO9001, 349 with Other, and 112 with ISO14001 certification.
        
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