How do listed pharmaceutical companies make money?

Sub-industry leaders gather in the "making money list", and the making money list with net profit as the indicator is recognized by the industry. However, because the scale factor is not included in this list, it still cannot perfectly reflect whether to make money, and scale has become a major influencing factor in this list. It is not difficult to find that except Liaoning Chengda and Jilin Aodong, most listed companies are leading enterprises in their sub-sectors: Shanghai Medicine and East China Medicine are representatives of pharmaceutical business, Yunnan Baiyao, Tongrentang and Dong 'e Ejiao are representatives of traditional Chinese medicine; Kangmei Pharmaceutical Co., Ltd. is the leader of Chinese herbal pieces; China Resources Sanjiu and Health Yuan belong to the category of modern Chinese medicine. Hualan Bio is the leader in the biological products industry; Representatives of chemical raw materials include Zhejiang Pharmaceutical, Xinhecheng and Dongbei Pharmaceutical. Hengrui Pharmaceutical, Harbin Pharmaceutical Co., Ltd., Shuanghe Pharmaceutical, Livzon