步长制药：关于控股子公司签订技术服务合同的公告

Group 1 - The core point of the article is that the company, Buchang Pharma, announced a contract with WuXi AppTec for conducting pharmacokinetics and toxicology testing projects [2] Group 2 - Buchang Pharma's subsidiary, Sichuan Luzhou Buchang Biopharmaceutical Co., Ltd., is the entity that signed the technical service contract with WuXi AppTec [2]