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About product and suppliers:
        Alibaba.com offers 2,782 machine screw jack products. About 36% of these are car jacks, 17% are speed reducers, and 3% are scaffoldings. 

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

There are 2,782 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 Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,374 with ISO9001, 275 with Other, and 125 with ISO14001 certification.