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About product and suppliers:
        Alibaba.com offers 2,139 constant current source products. About 8% of these are switching power supply, 1% are lighting transformers. 

A wide variety of constant current source options are available to you, such as triple, single. You can also choose from free samples, paid samples. 

There are 2,147 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 236 with ISO9001, 167 with Other, and 50 with ISO14001 certification.