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About product and suppliers:
        Alibaba.com offers 1,353 tea theanine products. About 33% of these are tea extract, 21% are herbal extract, and 1% are food additives. 

A wide variety of tea theanine options are available to you, such as tea extract, herbal extract, and nutrition enhancers. You can also choose from drum, bottle. As well as from free samples, paid samples. 

There are 1,348 tea theanine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and Hong Kong, which supply 98%, 1%, and 1% of tea theanine respectively. 

Tea theanine products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 477 with ISO9001, 292 with Other, and 138 with ISO22000 certification.