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About product and suppliers:
        Alibaba.com offers 18,512 usb tcp products. About 32% of these are time recording, 5% are access control system. 

A wide variety of usb tcp options are available to you, such as fingerprint, face. You can also choose from free samples, paid samples. 

There are 18,512 usb tcp suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of usb tcp respectively. 

Usb tcp products are most popular in Mid East, Domestic Market, and North America. 

You can ensure product safety by selecting from certified suppliers, including 3,916 with ISO9001, 2,126 with Other, and 712 with ISO14001 certification.
        
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