trustworthy. Zhongxin Zefutang Pharmaceutical Co., Ltd. is a trademark of Wenshan Zefutang Biotechnology Co., Ltd. The trademark has been formally audited, and the drugs it deals in are all guaranteed in quality, so it is trustworthy. The application date of Zhongxin Zefutang Pharmaceutical Trademark is January 12, 222, which belongs to Class 5 medicine in the international classification.