On March 15, 2019, JOINN (Suzhou) successfully passed the US Food and Drug Administration (FDA) GLP inspection. In the past 10 years (since the first inspection in 2009), the JOINN has passed four on-site inspections by the US FDA.

The inspection was conducted for five days (March 11-15). The inspectors reviewed the company's organization, operation and management, personnel, standard operating procedures, experimental facilities, archives, quality assurance system, computerized systems, animal welfare, and detailed traceability inspection for part of program applied for FDA approval. The inspectors highly appraised and fully affirmed JOIN's facilities, GLP compliance, research quality and quality management system.