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About product and suppliers:
        Alibaba.com offers 799 grape seed polyphenol products. About 31% of these are herbal extract, 2% are tea extract. 

A wide variety of grape seed polyphenol options are available to you, such as tea extract, herbal extract, and grape seed extract. You can also choose from free samples, paid samples. 

There are 790 grape seed polyphenol suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Thailand, and Spain, which supply 99%, 1%, and 1% of grape seed polyphenol respectively. 

Grape seed polyphenol products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 260 with ISO9001, 159 with Other, and 82 with GMP certification.