About Us
History
| December 2010 | Established RS Technologies Co., Ltd. with its primary business as wafer reclamation |
|---|---|
| January 2011 | Launched operation at Sanbongi Factory |
| November 2011 | Sanbongi Factory id ISO9001:2008 certified (for quality management systems) by UKAS |
| October 2013 | Launched solar business at Sanbongi Factory |
| February 2014 | Established RSTEC Semiconductor Taiwan Co., Ltd. (currently a consolidated subsidiary) as a reclaimed wafer manufacturing subsidiary in Taiwan |
| March 2015 | Listed on the Mothers section of the Tokyo Stock Exchange |
| June 2015 | Completed construction of Factory #8 of Sanbongi Factory with the introduction of state-of-the-art equipment |
| December 2015 | Completed construction Tainan Factory of 艾爾斯半導體股份有限公司 (RSTEC Semiconductor Taiwan Co., Ltd. (currently a consolidated subsidiary)) |
| September 2016 | Modified listing to the first section of the Tokyo Stock Exchange (TSE First Section) |
| December 2017 | Concluded a three-company joint venture agreement with 有研科技集団有限公司 (GRINM Semiconductor Materials Co., Ltd. (GRINM)) and 福建倉元投資有限公司 (Fujian Kuramoto) |
| January 2018 | Established 北京有研RS半導体科技有限公司 (Beijing GRINM RS Semiconductor Technology Co., Ltd. (BGRS)) and made 有研半導体材料有限公司 (GRINM Semiconductor Materials Co., Ltd. (GRITEK)), a Chinese prime wafer manufacturer, into our consolidated subsidiary |
| May 2018 | Acquired 100% shares of Union Electronics Solutions Co., Ltd. (Special agent of Hitachi Power Semiconductor Device, Ltd.) |
| August 2018 | Established 山東有研半導体材料有限公司 (Shandong GRINM RS Semiconductor Materials Co., Ltd. (Shandong GRITEK) (Consolidated subsidiary of GRITEK)) |
| January 2019 | Acquired 100% shares of DG Technologies Co., Ltd. (DG) |
| December 2019 | Concluded a four-party joint venture agreement with GRINM, 徳州滙達半導体股権 Investment Fund Partner Company, and Dezhou Municipal Government of Shandong Province |
| February 2020 | Established 上海悠年半導体有限公司 (Shanghai Union) |
| March 2020 | Established 山東有研RS半導体材料有限公司 (Shandong GRINM RS Semiconductor Materials Co., Ltd. (SGRS)) and 有研艾唯特 (北京) 科技有限公司 (Beijing IVT) |
| October 2020 | Completed construction of and launched production at the new factory of Shandong GRITEK to serve as the prime wafer production base in China |
| June 2021 | In preparation of GRITEK's listing, we changed its organizational structure to a corporation and its company name to 有研半導体硅材料股份公司 (English notation shall remain the same) |
| March 2022 | Transitioned from a company with an audit and supervisory board to one with an audit and supervisory committee |
| April 2022 | Moved to the Prime Market from the First Section of the Tokyo Stock Exchange Established the Nomination and Compensation Committee (voluntary) |
| June 2022 | Completed construction of the Kurihara Factory (Kurihara City, Miyagi Prefecture) as the second production base of DG |