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What types of Zhangzhuwenwan walnuts are there, and which variety is better?
Wenwan walnuts, also known as hand-therapy walnuts, fitness walnuts, or zhangzhu, are a must-have for Chinese wenwan enthusiasts, and are the most expensive type of walnut. Regularly rolling walnuts can delay the aging of the body and has a great effect on preventing cardiovascular disease and avoiding stroke. So what types of wenwan walnuts are there