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About product and suppliers:
        Alibaba.com offers 19,332 door contact products. About 30% 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 free samples, paid samples. 

There are 19,344 door contact suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Australia, which supply 98%, 1%, and 1% of door contact respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 5,191 with ISO9001, 889 with ISO14001, and 719 with Other certification.