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About product and suppliers:
        Alibaba.com offers 62 1 coulomb products. 

There are 62 1 coulomb suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 1 coulomb respectively. 

 coulomb products are most popular in North America, Southeast Asia, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 9 with ISO9001, 8 with ISO14001, and 7 with Other certification.