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About product and suppliers:
        Alibaba.com offers 399 sim card transmitter products. About 31% of these are navigation & gps, 18% are wireless networking equipment, and 9% are mobile phones. 

A wide variety of sim card transmitter options are available to you, such as 128kbps, 1024kbps, and 256kbps. You can also choose from internal, external. As well as from usb, rs-232. And whether sim card transmitter is free samples. 

There are 399 sim card transmitter suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of sim card transmitter respectively. 

Sim card transmitter products are most popular in Western Europe, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 95 with ISO9001, 37 with Other, and 9 with ISO14001 certification.