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About product and suppliers:
        Alibaba.com offers 18,410 door contact products. About 32% of these are alarm, 1% are elevator parts, and 1% are doors. 

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

There are 18,410 door contact suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of door contact respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 4,847 with ISO9001, 699 with ISO14001, and 649 with Other certification.