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About product and suppliers:
        Alibaba.com offers 4 oak tree extract products. About 50% of these are other extracts, 25% are herbal extract. 

A wide variety of oak tree extract options are available to you, such as bottle, drum. You can also choose from powder. 

There are 3 oak tree extract suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of oak tree extract respectively. 

Oak tree extract products are most popular in Germany, China, and Belgium.