China is rapidly expanding mature-node chip production at key sites, including SMIC's fabs in Beijing, Shenzhen, Shanghai Lingang, and Xiqing; Hua Hong Semiconductor's phase-two 12-inch fab in Wuxi; Nexchip Semiconductor's N3 facility; and the second-phase 12-inch project by Beijing Yandong Micro Electronic. With these ongoing investments, analysts estimate China's global share of 28nm capacity could exceed 31% by 2027