20 18, Zhejiang Tao Jian Environmental Protection Equipment Co., Ltd. obtained the invention patent of "Preparation Method of Isosalbutamol" with patent number ZL20 16 10685977.7.
2. Yixing Huading Environmental Protection Packaging Co., Ltd. obtained the invention patent of ZL20 17 10454748.0 "A new heterocyclic ring and its preparation method".
3.202 1, Jiangxi Shimei Environmental Technology Co., Ltd. obtained the invention patent of "a ceramic heterojunction ring and its preparation method", with the patent number ZL2020 10934939.3.