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About product and suppliers:
        Alibaba.com offers 2,105 constant current source products. About 11% of these are switching power supply. 

A wide variety of constant current source options are available to you, 

There are 2,086 constant current source suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Hong Kong, which supply 99%, 1%, and 1% of constant current source respectively. 

Constant current source products are most popular in North America, Western Europe, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 275 with ISO9001, 153 with Other, and 28 with ISO14001 certification.