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About product and suppliers:
        Alibaba.com offers 1,336 tea theanine products. About 33% of these are tea extract, 24% are herbal extract, and 1% are food additives. 

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

There are 1,328 tea theanine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Japan, and Germany, which supply 99%, 1%, and 1% of tea theanine respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 438 with ISO9001, 286 with Other, and 125 with GMP certification.