Core Insights - Semiconductor manufacturing companies in China, specifically SMIC's subsidiaries, have applied for a patent related to a testing device and method for IGBT wafers, which aims to enhance testing efficiency and accuracy [1][3] Company Overview - SMIC International Integrated Circuit Manufacturing (Tianjin) Co., Ltd. was established in 2003, located in Tianjin, with a registered capital of 129 million USD. The company has participated in 104 bidding projects and holds 385 patents [2] - SMIC North Integrated Circuit Manufacturing (Beijing) Co., Ltd. was founded in 2013, based in Beijing, with a registered capital of 480 million USD. It has engaged in 45 bidding projects and possesses 133 patents [2] - SMIC International Integrated Circuit Manufacturing (Shanghai) Co., Ltd. was established in 2000, located in Shanghai, with a registered capital of 244 million USD. The company has invested in 4 enterprises, participated in 127 bidding projects, and holds 5000 patents [2]