Eswin, China’s largest supplier of 12-inch silicon wafers, has received approval for an initial public offering (IPO) in Shanghai, the latest sign of increased efforts by Chinese chip companies to raise funds amid the rapid development of artificial intelligence (AI) and the country’s tech self-sufficiency drive. The company, which produces monocrystalline silicon polished wafers and epitaxial wafers for the manufacture of integrated circuits, received approval on Thursday for a listing on the...