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About product and suppliers:
        Alibaba.com offers 202,437 the detective products. About 4% of these are industrial metal detectors, 3% are alarm, and 3% are sensors. 

A wide variety of the detective options are available to you, such as ultrasonic sensor, optical sensor. You can also choose from analog sensor, switching transducer. As well as from free samples, paid samples. 

There are 202,437 the detective suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of the detective respectively. 

The detective products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 68,936 with ISO9001, 33,518 with Other, and 10,339 with ISO13485 certification.