| April 1964 |
Established as a subsidiary of Daiwa Ink Kogyo Co., Ltd. and embarked on the production and sales of epoxy resins used in the field of civil engineering and construction. |
| April 1968 |
Succeeded in developing polyurethane resin as a comprehensive manufacturer of special coatings and adhesive agents. |
| March 1973 |
Succeeded in developing floor coating materials and elastic paving for gymnasiums. |
| Febrary 1977 |
Developed the combined waterproofing DD method using special sheets and waterproof coating materials. |
| June 1979 |
Acquired approval for using the JIS label on rooftop waterproof coating materials. |
| June 1982 |
Built a new Technical Research Center in Oshima, Koto-ku. |
| April 1984 |
Succeeded in developing PAS sheets. |
| June 1986 |
The DD method applied to a total area of 6 million m2. |
| July 1987 |
Tie-up with Dainippon Ink and Chemicals, Incorporated.
Acquired shares of Dic Proofing Co., Ltd. |
| July 1988 |
Changed the company’s name from Daiwa Kobunshi Kogyo Co., Ltd. to Dyflex Co., Ltd. |
| April 1992 |
Established the "Quick Spray Method," an automated system for the high-speed application of hardening urethane |
| April 1994 |
Completed a new plant in Tsukuba. |
| September 1995 |
Transferred the headquarters from Hirakawa-cho to Jingu-mae. |
| October 1996 |
Built a new Technical Research Center in Funabashi City, Chiba prefecture. |
| September 1998 |
Built warehouses for dangerous goods and general storage at the Tsukuba plant. |
| October 1999 |
Succeeded in developing the "Values" series, a next-generation waterproofing method. |
| December 2000 |
Acquired ISO 9001 and 9002 certification. |
| April 2001 |
Transferred the Matsudo plant to Ukishima in Ibaraki prefecture. Changed the name to the Ukishima plant. |
| April |
Established a thermal insulation waterproofing method for thermal-storage tanks, the "Thermo Stock Method." |
| Febrarty 2002 |
Organized the Eco-Urex workshop. |
| April |
Technical tie-up with Mitsui Takeda Chemicals, Inc. |
| May |
Capital participation in Takeda U-plex Co., Ltd. |
| July |
Sales of the building protective and waterproofing system "Resitect". |
| March 2003 |
Transferred the headquarters from Jingu-mae to the Shinjuku NS building. |
| April 2003 |
Changed the company's name from Dyflex Co., Ltd. to Dyflex Holdings Co., Ltd. and re-established the operational department as a wholly-owned subsidiary. |
| May 2004 |
Comprehensively tied up with Tajima Roofing Co., Ltd. |
| June 2004 |
Established the Water Curing Urethane Promoting Association. |
| April 2005 |
Subsidized U-prex Co., Ltd. |
| August 2006 |
Sales of the clear membrane tile wall falling prevention with waterproofing function "EVERGUARD". |
| February 2007 |
Business Transfer from Kowa Chemical Industries Co.,Ltd. |
| April 2007 |
Changed the Trading Company Name from Dyflex Holdings Co., Ltd. to Dyflex Co., Ltd. |
| June 2010 |
Dyflex started Joint Venture with Sika Corp. (HQ, Baar in Switzerland) after Sika has acquired major shares of Dyflex HD Ltd. |
| July 2010 |
Sales of the low density ultra fast curing polyurethane waterproofing with the closed micro-cell structure "GET SYSTEM". |
