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About product and suppliers:
        Alibaba.com offers 2,940 machine screw jack products. About 34% 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 free samples, paid samples. 

There are 2,940 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 1,534 with ISO9001, 310 with Other, and 125 with ISO14001 certification.