| 1938 |
Tokai Kogyo Co., Ltd. established in Ugusu, Kamo-mura, Kamo-gun, Shizuoka Prefecture, with 100% investment from Asahi Glass Co. Capitalized at 1 million yen. |
| 1939 |
Began production of Izu silica sand for sheet glass. |
| 1958 |
Completed Izu Silica Sand Plant and started production of fine silica sand. |
| 1962 |
Construction of Ohata Plant at Nagoya Works in Ohata-cho, Toyota City, Aichi Prefecture, and started production of silica sand for polishing. |
| 1964 |
Nagoya Works started production of silica sand and feldspar for glass by flotation beneficiation method. |
| 1965 |
Started sales of Izu silica sand for lightweight foamed concrete (ALC). |
| 1970 |
Increased capital to 400 million yen. |
| 1974 |
Completed and started operation of Yamamoto Plant at Izu Works to increase production of silica sand for ALC. |
| 1986 |
Established Taiwan Tokai Koko (Taiwan) Co., Ltd. in to produce silica sand for glass. |
| 1987 |
Started sales of building materials. |
| 1988 |
Started trading business. |
| 1989 |
Completion and operation of Celst 1986r Plant at Nagoya Works. |
| 1991 |
Toritsu Mining Co. a silica stone mining and manufacturing company in Kuji City, Iwate Prefecture, was acquired jointly with Kawatetsu Mining Co. |
| 2006 |
Registered ISO14001 as Asahi Glass Group’s integrated EMS. |
| 2006 |
Started handling silica sand in Vietnam. |
| 2007 |
Joint investment with JFE Mineral Co., Ltd. in Awano Crushed Stone Co. in Kanuma City, Tochigi Prefecture. |
| 2009 |
Company-wide registration of ISO9001 from factory to company-wide. |
| 2014 |
Establishment of Taiwan Tokai Industries, Ltd. in China (Taiwan). |
| 2008 |
Started handling Malaysian silica sand. |
| 2022 |
Established Malaysia Representative Office in Malaysia. |
| 2023 |
Changed the company name to AGC Mineral Corporation. |
| 2023 |
TAIWAN TOKAI KOGYO Co.,Ltd. changed the company name to AGC MINERAL Taiwan Co.,Ltd.. |