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About product and suppliers:
        Alibaba.com offers 5,096 door security bar products. About 5% of these are locks, 1% are other door & window accessories, and 1% are fencing, trellis & gates. 

A wide variety of door security bar options are available to you, such as free samples, paid samples. 

There are 5,082 door security bar suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of door security bar respectively. 

Door security bar products are most popular in Mid East, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,874 with ISO9001, 1,262 with ISO14001, and 1,195 with OHSAS18001 certification.