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About product and suppliers:
        Alibaba.com offers 5,456 bluetooth4.0 products. such as free samples, paid samples. 

There are 5,468 bluetooth4.0 suppliers, mainly located in Asia. The top supplying countries are China (Mainland), South Korea, and Taiwan, which supply 99%, 1%, and 1% of bluetooth4.0 respectively. 

Bluetooth4.0 products are most popular in North America, Western Europe, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,053 with ISO9001, 245 with Other, and 128 with BSCI certification.