Which manufacturer is Ying Da finger oximeter?

Hainan Yingda Health Medical Device Co., Ltd. is a subsidiary of Hainan Yingda Health Medical Device Co., Ltd., which is a wholly-owned subsidiary of Hainan Huanglong Pharmaceutical Co., Ltd., located in Jiangdong New District of Haikou, and is a high-tech enterprise specializing in the production and operation of medical devices. At present, the company's main business: research and development and production of endoscope products, one-stop service provider of endoscope, production and sales of epidemic prevention materials, sales and research and development of in vitro diagnostic reagents. Partners are: Shanghai Outai Medical, Hangzhou Meimei Technology, Zhongshan Maisheng Medical and Guangzhou Outai Maintenance.