| 1925 | Miyagawa Tool Works established. |
| 1935 | Factory moved to a newly constructed facility in Higashi-Osaka City (present location). |
| 1938 | Policy initiated of hiring the disabled. |
| 1959 | Tokyo branch office opened, marking the first step toward the creation of a domestic network. |
| 1961 | Second factory completed at Head Office. Mass production of pipe machines started. |
| 1964 | Sales department becomes an independent concern, REX Tool Co., Ltd. |
| 1965 | REX Industries Co., Ltd. established. |
| 1974 | European market links opened. New reconstruction work on Head Office factory completed. |
| 1976 | American market links opened. |
| 1979 | Head Office moved to Minamishimizu-cho, Minami Ward, Osaka. |
| 1988 | Wheeler Mfg., established as a division of REX International U.S.A., Inc. 2D computer-aided design (CAD) introduced. |
| 1989 | REX Industries Co., Ltd. merges with REX Tool Co., Ltd. Service division becomes an independent company (REX Techno Service Co., Ltd. ) |
| 1990 | Construction of training facilities at Misaki Hall completed. REX products exhibited at Milan exhibition. |
| 1991 | REX International Asia Co., Ltd. established. Construction of new building in Higashi-Osaka completed. |
| 1992 | "ENSYS" production control system and "RIMSS" sales control system implemented. |
| 1993 | Corporate Identity (CI) activities initiated. |
| Horse Amenity Division established. |
| SPARKLE series awarded first prize by Osaka Design Center. |
| 1994 | MANTIS 180 (Band Saw) and REX Star 25 (pipe threading machine) awarded Good Design Award by the Ministry of International Trade and Industry. MANTIS 180 awarded Good Design Prize for Products, Architecture or Interiors by Small and Medium Enterprises Agency. |
| 1995 | Support team organized to help with reconstruction following the Great Hanshin-Awaji |
| An earthquake of January 1995; team dispatched to reconstruction sites. |
| Research into diamond tools and equipment begins. |
| 1996 | Suzhou REX Electro-Machinery Co., Ltd. established. |
| Tottori REX Industries Co., Ltd. established. |
| 3D computer-aided design (CAD) introduced. In-house network completed. |
| 1997 | REX Museum completed. |
| Roll the Threading machine receives Grand Meritorious Prize for Japanese Inventions. |
| 1998 | Trade with Central & South America begins. |