| 1960 | Established Tokyo Machinery Co., Ltd. Head office in Saiwai-ku, Kawasaki City; Tokyo branch in Takanawa, Minato-ku |
| 1977 | Built own office building in Saiwai-ku, Kawasaki. Consolidated operations by relocating Tokyo branch to Kawasaki |
| 1983 | Constructed a new company building in Kawasaki-ku, Kawasaki, and relocated head office. Started design of broadcasting/video equipment and radio application equipment (sheet metal) |
| 1997 | Introduced 3D CAD and began full-scale 3D design |
| 1998 | Began contract development of various testing machines, measuring instruments, and experimental observation devices (mechanical, electrical, control) |
| 2001 | Start of thermo-fluid analysis (sheet metal) Linux Server construction and compatible software development |
| 2003 | Renamed company to TMC System Co., Ltd. and established new management structure |
| 2004 | Started FPGA design (introducing ModelSim) Began 3D structural analysis |
| 2005 | Increased capital to 50 million JPY |
| 2007 | Jointly developed a handy-type air compressor with Tokyo Institute of Technology. Began presenting papers at conferences such as the Institute of Electronics, Information and Communication Engineers. |
| 2008 | Developed and launched hammering micro vibration equipment |
| 2009 | Constructed new Assembly & Experiment Building next to Daiichi Building |
| 2010 | Developed the Tapping Device. |
| 2011 | Developed the Precision Micro-Fretting Tester |
| 2015 | Launched website production business |
| 2019 | Certified as "Kawasaki☆Eruboshi" |
| 2021 | Certified as Kawasaki SDGs Gold Partner |
| 2023 | Certified under the "Business Continuity Enhancement Plan" |
| 2024 | Certified as a "2024 Health and Productivity Management Excellent Corporation" |