欧美 亚洲 国产 另类,欧美 亚洲 日韩 在线综合,人妻少妇乱孑伦无码专区,青青草在在观免费福利线观看

Intellectual Property

As an innovative-technology-driven enterprise, Chemspec has paid great attention to the protection of intellectual property. Up to the end of 2022, the Company has obtained 76 patent licensing, including 52 invention patent licensing, 15 utility model patent licensing, and 5 Japanese and Korean patent licensing. 

014.jpg