Joinn Laboratories (China) Co., Ltd. is a China-based company principally engaged in the provision of pharmaceutical research and development outsourcing services. The Company operates its business through two segments. The Pharmaceutical Research and Development Outsourcing Services segment mainly provides non-clinical safety evaluation services, pharmacodynamic research services, animal pharmacokinetic research services and drug screening services. The Laboratory Animal Production and Marketing segment is principally engaged in the production and sales of laboratory animals such as mice, rats and monkeys as well as their ancillary products. The Company mainly operates its business in the domestic market.