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About product and suppliers:
        Alibaba.com offers 595,336 40w products. About 6% of these are laser engraving machines, 5% are led street lights, and 1% are laser equipment parts. 

A wide variety of 40w options are available to you, such as free samples, paid samples. 

There are 594,191 40w suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of 40w respectively. 

0w products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 135,619 with ISO9001, 84,638 with Other, and 25,819 with ISO14001 certification.
        
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