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About product and suppliers:
        Alibaba.com offers 1,463 types of screw jack products. About 28% of these are scaffoldings, 17% are car jacks, and 12% are ladder & scaffolding parts. 

A wide variety of types of screw jack options are available to you, such as scaffolding props, scaffolding frames, and scaffolding couplers. You can also choose from scaffolding parts, ladder parts. As well as from free samples, paid samples. 

There are 1,499 types of screw jack suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Japan, which supply 88%, 9%, and 1% of types of screw jack respectively. 

Types of screw jack products are most popular in Domestic Market, South America, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 873 with ISO9001, 172 with Other, and 60 with ISO14001 certification.