1994

Establishment of Wuxi Huazhi Microelectronics Co., Ltd.
Wuxi HuaZhi Microelectronics Co.,Ltd founded

2002

Establishment of Toshiba Semiconductor (Wuxi) Co., Ltd.
Toshiba Semiconductor (Wuxi) Co.,Ltd (TSW) founded

▶ December 2002: Commenced production

2010

Establishment of Wuxi Tongzhi Microelectronics Co., Ltd.
Wuxi Tongzhi Microelectronics Co.,Ltd (WTZ)
(Ownership: Toshiba Semiconductor 80% / Nantong Fujitsu 20%)

▶ April 2010: Commenced operations

▶ December 2012: Toshiba acquired all shares from Nantong Fujitsu, becoming wholly-owned subsidiary

2013

Joined ASE Group
Signed equity transfer agreement with ASE A&T (Shanghai)

▶ June 2013: Officially began operations under ASE Group