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About product and suppliers:
        Alibaba.com offers 20,087 door contact products. About 26% of these are alarm, 1% are electrical contacts and contact materials, and 1% are springs. 

A wide variety of door contact options are available to you, such as door, smoke. You can also choose from free samples, paid samples. 

There are 20,144 door contact suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Malaysia, and Australia, which supply 98%, 1%, and 1% of door contact respectively. 

Door contact products are most popular in North America, Mid East, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 4,547 with ISO9001, 787 with Other, and 569 with ISO14001 certification.