Xi’an TonKing is an experienced and technical company in China. We are dedicated to provide natural, healthy raw material for both new and regular customers, with our consistent best service and quality! With a large product line, Xi'an TonKing Biotech Co., Ltd. is able to meet customer needs while carrying a full line of herbal extracts, specialty chemicals and Chinese herb slice according to GMP. Xian TonKing is very proud of its leading expertise and capacity in the research,development a...