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About product and suppliers:
        Alibaba.com offers 1,143 metal screw jack products. About 28% of these are scaffoldings, 26% are ladder & scaffolding parts, and 11% are car jacks. 

A wide variety of metal screw jack options are available to you, such as scaffolding props, scaffolding frames. You can also choose from pcb, power, and audio & video. As well as from 11-20t, 1-10t, and >50t. And whether metal screw jack is free samples, or paid samples. 

There are 1,143 metal screw jack suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of metal screw jack respectively. 

Metal screw jack products are most popular in Mid East, Southeast Asia, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 706 with ISO9001, 39 with ISO14001, and 38 with Other certification.