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About product and suppliers:
        Alibaba.com offers 384 semi automatic twist lock products. About 33% of these are trailer parts, 5% are marine hardware, and 4% are cast & forged. 

A wide variety of semi automatic twist lock options are available to you, such as trailer locks, trailer axles. You can also choose from bearing, semi-trailer. As well as from free samples. 

There are 384 semi automatic twist lock suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of semi automatic twist lock respectively. 

Semi automatic twist lock products are most popular in Mid East, Southeast Asia, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 112 with Other, 98 with ISO9001, and 51 with ISO/TS16949 certification.