Suzhou Huatai Air Filters Co., Ltd.

Guangdong General Hospital
Shenyang Second People’s Hospital
The First Hospital of China Medical University
Shanghai Ruijin Hospital
Wuhan Heart Hospital
Harbin Center for Disease Control and Prevention of Heilongjiang Province
Kunming Children's Hospital
Xinjiang Hetian Muyu County Uygur Hospital
General Hospital of Nanjing Military Region
Hunan Maternal and Child Health Hospital
Fourth Military Medical University (Tangdu Hospital Obstetrics and Gynecology)
Zhejiang 113 Hospital, Chinese People 's Liberation Army