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About product and suppliers:
        Alibaba.com offers 115,278 3mm led products. About 4% of these are diodes, 1% are lamp led, and 1% are high power led. 

A wide variety of 3mm led options are available to you, such as led, signal diode, and laser diode. You can also choose from through hole, surface mount. As well as from free samples, paid samples. 

There are 115,006 3mm led suppliers, mainly located in Asia. The top supplying countries or regions are China, Taiwan, China, and Hong Kong S.A.R., which supply 98%, 1%, and 1% of 3mm led respectively. 

mm led products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 32,336 with ISO9001, 10,982 with Other, and 6,904 with ISO14001 certification.