Chengdu Weihui Biological Technology Co.,Ltd.is a professional high-tech enterprise which focuses on developing natural plant resources. It is located in Chengdu national ecological region-Pujiang.its surrounding has millions acres of green tea base for the production of tea polyphenols series so as to create extremely favorable conditions for production and processing. Our company always regards supplying safe, natural and high-qualified products to customers as our own responsibility .and our...