W ang Minwen is a Chinese billionaire whose wealth is derived from his family's stake in the pharmaceutical company Chengdu Lummy, a major domestic drugmaker with a focus on specialty injectable drugs. The company has a strong market position in China in the production of lipid-based injectable emulsions, which are used for a variety of therapeutic purposes.

While he is not the founder of the company, he has been a key figure in its leadership, serving as its chairman. The company's growth has been fueled by the expanding Chinese healthcare market. The family's controlling stake in the publicly traded company is the source of their billion-dollar fortune.