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About product and suppliers:
        Alibaba.com offers 3,250 double bolt lock products. About 24% of these are locks, 1% are seals, and 1% are other hardware. 

A wide variety of double bolt lock options are available to you, such as door & window handles, door & window bolts, and other door & window accessories. You can also choose from metal, steel, and plastic. As well as from free samples, paid samples. 

There are 3,250 double bolt lock suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of double bolt lock respectively. 

Double bolt lock products are most popular in Domestic Market, North America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,515 with ISO9001, 360 with Other, and 140 with ISO/TS16949 certification.