Recently, Qiyuan Pharmaceutical obtained the invention patent certificate of "A method for recovering mother liquor of primary crystallization of gulonic acid" issued by the State Intellectual Property Office. This is the second invention patent obtained by Qiyuan Pharmaceutical in the field of vitamin C production.

Qiyuan Pharmaceutical has obtained a number of invention patents, which fully reflects the company's independent research and development and innovation capabilities, which is conducive to maintaining the company's technological leadership, improving the company's brand awareness, and will have a positive effect on the company's continuous business development.