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About product and suppliers:
        Alibaba.com offers 12,229 gw 2 products. About 2% of these are animal pharmaceuticals, 2% are vitamins, amino acids and coenzymes, and 1% are auxiliaries and other medicinal chemicals. 

A wide variety of gw 2 options are available to you, such as free samples, paid samples. 

There are 12,229 gw 2 suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of gw 2 respectively. 

Gw 2 products are most popular in North America, South America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 2,184 with ISO9001, 1,149 with Other, and 249 with ISO14001 certification.