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About product and suppliers:
        Alibaba.com offers 142,602 nm products. such as free samples, paid samples. 

There are 140,756 nm suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 95%, 1%, and 1% of nm respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 38,914 with Other, 33,344 with ISO9001, and 15,010 with ISO13485 certification.