Annual capacity of the manufacturing facilities managed by TSMC and its subsidiaries exceeded 12 million 12-inch equivalent wafers in 2019. These facilities include four 12-inch wafer GIGAFAB??fabs, four 8-inch wafer fabs, and one 6-inch wafer fab – all in Taiwan – as well as one 12-inch wafer fab at a wholly owned subsidiary, TSMC Nanjing Company Limited, and two 8-inch wafer fabs at wholly owned subsidiaries, WaferTech in the United States and TSMC China Company Limited. In 2016, TSMC Nanjing Company Limited was established, managing a 12-inch wafer fab and a design service center.
TSMC provides customer service through its account management and engineering services offices in North America, Europe, Japan, China, and South Korea.