Central Business District 022, Modern Medicine Port, Changjiang East Road, Heze Development Zone, Shandong Province. The manufacturer of Jirentang hyaluronic acid is Shandong Jirentang Pharmaceutical Co., Ltd. (formerly known as Dong 'a Jiren Pharmaceutical Co., Ltd.), which was established in 1996 and located at 022, Central Business District of Modern Medicine Port, Changjiang East Road, Heze Development Zone, Shandong Province. Is a pharmaceutical manufacturing-oriented enterprise.