- August, 1977
- Tokyo Flex KK was Established
- May, 1985
- Concluded a Business Collaboration Agreement with Senior Flexonics in the US
- August, 1986
- Installed a Vacuum Batch-Type Large Heat-Treating Furnace
- December, 1987
- Established the Joint Venture Company "TF Tianjin Industrial Co., Ltd."
- October, 1988
- Began Development of Earthquake-Proof Flexible Hoses
- August, 1992
- Installed the World’s Largest Braiding Machine which can Braid Up to a Diameter of 600A
- October, 1993
- Acquired First Approval for Flexible Hose to be Used with Pump Equipment Under the Fire Defense Law
- August, 1994
- Manufactured the World’s First Large-Diameter Flexible Metal Hose for the Iron & Steel Industry
- November, 1994
- Established a Factory in Ho Chi Minh City, Vietnam
- April, 1996
- Changed the Company Name to "Technoflex Inc."
- July, 1999
- Installed a Clean Room (Class 100, 1000, 10000) for the Clean Device Factory
- August, 1999
- All Departments were Certified According to ISO 9001
- October, 2000
- Concluded a Business Collaboration Agreement with Tokyo Rasenkan
- October, 2001
- Established the Techno Division Preparation Company
- January, 2002
- Changed the Company Name to "Technoflex & Tola, Inc."*
- April, 2002
- Concluded a Business Collaboration Agreement with Toyo Rasenkan
- December, 2002
- Certified According to ISO14001
- December, 2002
- Three companies ,"Tokyo Rasenkan"，"Toyo Rasenkan" and "Techno Flex" consolidated into "TECHNOFLEX&TOLA, INC".
- January, 2003
- Completed Development of Flexible Metal Hoses for Fuel Cell Vehicles
- November, 2003
- Received Expanded ISO9001 Examination and was Certified
- January, 2005
- In order to Strengthen Organization, Six Marketing Departments were Changed to Two, the Pipe Joint Division and Clean Device Division
- August, 2005
- Completed Development and Began Selling the New Non-Welded Flexible Metal Hose Type F118
- December, 2005
- Received Electricity Enterprises Law Welding Management Process (JIS Z3400 Base Standard) Certification
- May, 2007
- Completed Development and Began Selling the New Non-Welded Flexible Metal Hose Type F138 for Fire Extinguishing
- October, 2007
- Applied for Expanded ISO9001 for the Kamihayashi Factory and was Certified
- January, 2008
- Applied for ISO14000for the Kamihayashi Factory and was Registered
- January, 2009
- Changed the Company Name to "TECHNOFLEX CORPORATION"
* The former Technoflex company was transferred to a pure holding company, and the Asset Maintenance Department and Operations Department were divided. The Operations Department and the trade name were transferred to the Techo Division Preparation Company, and the trade name was changed to "TechnoFlex Inc." The pure holding company changed its name to "Techno Holdings."
- June, 1940
- Tokyo-Rasenkan was Established
- March, 1965
- Developed Pressure Balance Expansion Joint for Bridge Gas Pipes
- April, 1971
- Completed Development of Flexible Pipe Under Agency Contract with New Technology Development Association
- April, 1978
- Completed Development of the Oval Bellows JT60 (Nuclear Fusion Reactor) for Vacuum Containers
- February, 1980
- Developed a 5-Layer Aluminum Bellows for Power Transmission Lines
- April, 1985
- Developed a TOT Type Expansion Joint for City Water
- December, 1988
- Began Manufacturing Long Flexible Hoses Exclusively for City Gas and LP Gas
- February, 1989
- Developed Underground Double-Pipe Joints for Local Air Conditioning
- July, 1990
- Completed Development of Three Hinge Expansion Joint System in Gas Pipes for Seismic Installation
- October, 1990
- Developed Vertical BA Furnace Muffler Tube
1600BA - February, 1992
- Delivered a High-Pressure Expansion Joint to NASDA for the H1-9 Rocket
- October, 1995
- Established the Joint Venture Company Aerosun-Tola Expansion Joint Co.,LTD. in Nanjing, China
- September, 1998
- Developed a Reinforcement Material (Flexible Construction Material) for Liquid and Oil Embankments
- October, 2000
- Concluded a Business Collaboration Agreement with Technoflex
- April, 2002
- Concluded a Business Collaboration Agreement with Toyo Rasenkan
- October, 1948
- Toyo-Rasenkan was Established
- October, 1958
- Produced the First Japanese-Made Bellows Type Expansion Joint for City Water
- December, 1969
- Participated in the JFT-2 Fusion Development Project with JAERI by Handling Development of the Vacuum Tank Named TORAS
- August, 1974
- Completed the World's Largest Expansion Joint for a Geothermal Power Generator
- April, 1975
- Participated in the Research and Development of the JFT-3 Fusion Development Project with JAERI
- August, 1978
- Completed an Expansion Joint for an LNG Vessel
- August, 1979
- Received a Large Order for the Construction of a Supersonic Test Wind Tunnel for JAXA
- October, 1979
- Began Study for the JT-60 Fusion Development Project
- February, 1980
- Began Production of Expansion Joints for a Rocket Launcher Fuel Loader in Uchinoura
- September, 1981
- Began Research and Development of Piping Systems for Land-Based Storage of LNG
- October, 1981
- Completed the First Japanese Expansion Joint for LNG Combined Cycle Power Generator
- October, 1987
- Completed Expansion Joint for Air Conditioning in Tsukuba Science City
- July, 1989
- Participated in the Coal Gas Project
- April, 1991
- Participated in the High-Pressure Fluid Membrane Combined Cycle Power Generation Project
- December, 2001
- Concluded a Business Collaboration Agreement with Technoflex
- April, 2002
- Concluded a Business Collaboration Agreement with Tokyo Rasenkan
