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About product and suppliers:
        Alibaba.com offers 492 screw jack base plate products. About 58% of these are ladder & scaffolding parts, 32% are scaffoldings. 

A wide variety of screw jack base plate options are available to you, such as scaffolding planks, scaffolding props, and scaffolding frames. You can also choose from free samples, paid samples. 

There are 492 screw jack base plate suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of screw jack base plate respectively. 

Screw jack base plate products are most popular in Southeast Asia, North America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 191 with ISO9001, 21 with Other, and 3 with OHSAS18001 certification.