Gao Yaqin (right) at work. [Photo/Zhejiang Daily]

A drug needs to undergo hundreds of procedures, from R&D to clinical trials to registration and listing before it is available on the market.

Over the past 12 years, Gao Yaqin, a quality engineer of Beida Pharmaceutical Company, has participated in the inspection of more than 10,000 pieces of materials, checked countless data, and has never made a mistake.

Gao still remembers that when he first arrived at the enterprise, there were only seven people in the quality inspection department and two important testing equipment. To not delay the progress of research and development, Gao worked in the laboratory for more than two months and completed all the testing work on time.

"Every time I see the smile on the patient's face, I feel it is worth it no matter how hard it is." Gao said.