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About product and suppliers:
        Alibaba.com offers 1,366 carbon pill products. About 49% of these are keypads & keyboards, 1% are silicone rubber, and 1% are electronics chemicals. 

A wide variety of carbon pill options are available to you, such as free samples, paid samples. 

There are 1,380 carbon pill suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and United States, which supply 98%, 1%, and 1% of carbon pill respectively. 

Carbon pill products are most popular in North America, Domestic Market, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 991 with ISO9001, 166 with Other, and 63 with ISO14001 certification.