- 1963 Jul - Received BOI Investment Promotion for production of Leaf Spring.
- Dec - Established with registered capital of 10 million baht.
- 1964 Nov - Constructed Samrong factory and began production of Leaf Spring.
- 1972 Jul - Conclude the Technical Assistance Agreement of Auto Seat with NHK Spring Co.,Ltd.
- 1973 Apr -Began production of Auto Seat.
- 1974 Jul -Conclude the Technical Assistance Agreement of Trimming Parts with NHK Spring Co.,Ltd.
- Began production of Trimming Parts.
- -Started production of Trimming parts.
- 1977 Aug -Increased registered capital to 20 million baht. (Increased 10,000 shares)
- 1978 Jun -Began production of Coil Spring.
- 1979 Apr -Mr.Shigemi Morita was appointed as the President.
- 1982 May -Began production of Stabilizer.
- 1983 Jan -Started production of Vacuum Forming.
- 1984 Jun -Mr.Shigekasu Suzuki take a position as the President.
- 1986 Oct -Increased registered capital to 40 million baht. (increased 20,000 shares)
- Dec -Set up the Head Office at Samrong and constructed Precision Spring factory.
- 1987 Mar -Began production of Precision Spring (Wire Spring).
- Jun -Mr.Kaoru Kawakami was appointed as the President.
- 1988 Mar -Began production of Hot Press Forming Door Trim.
- 1989 Jan -Purchased land in Banpoo Industrial Estate. (43,268m2)
- 1990 Jul -Began production of Precision Spring. (Valve Spring).
- Dec -Concluded the Technical Assistance Agreement of Auto Seat Production with Shiroki Kogyo Co., Ltd.
- 1991 Dec -Constructed Banpoo factory and transferred Auto Seat and Trimming Parts Production from Samrong factory to Bangpoo factory.
- 1992 Jun -Mr.Tadaharu Kaneko was appointed as the President.
- Dec -Concluded the Technical Assistance Agreement of Precision Spring (Wire Spring & Flat Spring) Production with NHK Spring Co.,Ltd.
- 1993 Mar -Concluded the Technical Assistance Agreement of Trimming Parts (Matron V) Production with Takashimaya Nippatsu Kogyo Co.,Ltd. (Toyota Bushoku)
- May -Began production of Recliner.
- Jun -Began production of Stabilizer New Production Line.
- Aug -Began production of Flat Spring.
- Sep -Purchased land in Gateway Industrial Estate. (48,000m2)
- Nov -Concluded the Technical Assistance Agreement of Seat & Trimming Parts Production with Takashimaya Nippatsu Kogyo Co.,Ltd. for supply parts to Toyota Motor Thailand Co.,Ltd.
- Dec -The 30th Anniversary
- 1994 Jan -Began production of Coil Spring New Production Line & Matron V.
- Aug -Purchased land in Wellgrow Industrial Estate (56,404m2).
- Sep -Consolidated 3 the Technical Assistance Agreement with NHK Spring Co.,Ltd: Leaf Spring, Coil Spring and Stabilizer
(Pipe & Solid) to be the new agreement namely "Technical Assistance Agreement of Suspension Spring Production".
- Oct -Concluded the Technical Assistance Agreement of T Shape Slide Rail Production with Shiroki Kogyo Co.,Ltd.
- 1995 May -Added Torsion Bar and Impact Beam to the Technical Assistance Agreement of Suspension Spring Production.
- Jul -Consilidated the Technical Assistance Agreement with NHK Spring Co.,Ltd.: Auto Seat and Trimming Parts to be the new agreement namely "Technical Assistance Agreement of Trimming Parts Production".
- Jul -Began production of Torsion Bar.
- Nov -Constructed factory at Gateway Industrial Estate and began production of Auto Seat for supply to Toyota Gateway plant.
- 1996 May -Purchased land for expansion Gateway factory.(48,000m2)
- Sep -Constructed Suspension Spring factory at Wellgrow Industrial Estate to produce Leaf Spring for 1 ton of Pick up.
- 1997 Jan -Constructed Precision Spring factory at Wellgrow Industrial Estate and transferred Precision Spring prodcution from Samrong to Wellgrow.
- Apr -Increased registered capital to 50,200,000 baht. (Increased 10,200 shares)
- Jun -Purchased land for expansion Bangpoo factory.(25,367m2)
- Jul -Separated Gateway factory out and established new company name as Thai Automobile Seating & Interior Co.,Ltd. (TASI).
- 1998 Apr -Received BOI Investment Promotion for production of HDD parts.
- Sep -Precision Spring factory began production of HDD parts.
- 1999 May -Concluded the Technical Assistance Agreement of HDD parts Production with NHK Spring Co.,Ltd.
- Jun -Mr.Yoshinori Omori was appointed as the President. - Increased registered capital to 370,000,000 baht. (Increased 319,800 shares)
Increased registered capital to 370,000,000 baht. (Increased 319,800 shares)
- Oct -sold some shares of TASI to Takashimaya Nippatsu Kogyo Co.,Ltd.
- 2001 Jul -Concluded the Technical Assistance Agreement of Shutter Spring Business with Tohoku Nippatsu Co.,Ltd.
- Aug -Increased registered capital to 390,000,000 baht. (Increased 20,000 shares)
- 2002 Jan -Concluded the Technical Assistance Agreement of Precision Spring Chain Tensioner production with NHK Spring Co.,Ltd.
- Jun -Concluded the Technical Assistance Agreement of polyurethane foam forming for Headlining with Sanwa Kogyo Co.,Ltd.
- Aug -Increased registered capital to 410,000,000 baht. (Increased 20,000 shares)
- Sep -Purchased land for expansion Wellgrow factory. (21,068m2)
- 2003 Mar -Purchased land for expansion Wellgrow factory. (5,772m2)
- Dec -Moved Head Office from Samrong to Bangna Towers
- -The 40th Anniversary
- Oct -Purchased land for expansion Wellgrow factory. (20,828m2)
- 2005 Mar -Purchased land for expansion Wellgrow factory. (14,584m2)
- Dec - Purchased land for constrcution Banpho factory. (90,804m2)
- 2006 Jan -Expanded Suspension Spring factory to Wellgrow Phase 2.
- Apr -Purchased land for expansion Banpho factory. (10,008m2)
- May -Received promotional privilege from BOI for DDS
- May -Concluded the Technical Assistance Agreement of DDS business and concluded the patent license agreement with NHK Spring Co.,Ltd.
- Aug -Constructed DDS factory at Wellgrow Industrial Estate and began production.
Constructed Banpho factory and began production of Auto Seat to Toyota Motor Thailand Co.,Ltd. (Banpho plant).
- Apr -Expanded Suspension Spring factory to Wellgrow phase 3.
- Jun -Mr.Yoshinori Omori was appointed as the Chairman and Mr.Hiroyuki Kado was appointed as the President.
- May -Purchased land for expansion Banpho factory. (72,108m2)
- Jul -Sold shares TASI to Toyota Bushoku Asia Kaoru.
- 2008 Feb -Purchased land for expansion Banpho factory. (15,652m2)
Opening Training center at Banpho factory.
- Aug -Concluded the Technical Assistance Agreement of Headlining production with Grupo Antolin Irausa, S.A.
- Sep -Purchased land in Hemaraj Eastern Seaboard Industrial Estate. (142,034m2)
- 2009 Jan -Expanded DDS wellgrow factory.
- Mar -Mr.Yoshinori Omori retired from the Chairman.
- 2010 Mar -Purchased land for expansion wellgrow factory. (40,000m2)
- 2011 Mar -Received BOI Investment Promotion for Hemraj Project.
- Jun -Constructed Auto Seat factory at Hemraj.
- Jun -Mr.Kaoru Hatayama was appointed as the President.
- Jul -Constructed the expansion of Precision Spring Wellgrow Factory.
- 2012 Feb -Started Auto Seat production for Suzuki at Hemaraj Plant.
- Mar -Started Auto Seat production for Mitsubishi at Hemaraj Plant.
- Oct -New company produce automotive headliners with Grupo Antolin Irausa, S.A., named as NHK Antolin (Thailand) Co., Ltd. initiated
- 2013 Dec -The 50th Anniversary.
- 2014 Mar -Mr.Taro Umemura was appointed as the President.
- 2016 Jan -New company produce automotive trim covering with Chai Watana Tannery Group PLC, named as NHK Spring (Cambodia) Co.,Ltd.
- 2018 Mar -Mr.Taro Umemura was appointed as the Chairman and Mr.Ryuichi Shibata was appointed as the President.
- 2019 Mar -Expanded the Training center by establishing the Training Village.
-Mr.Taro Umemura retired from the Chairman.
- 2020 Mar -Opening Technology Development Learning Center (TDLC) at wellgrow Factory.
- 2021 Mar -Mr.Hajime Okajima was appointed as the President.
- 2025 Mar -MR. YOICHI IKEJI was appointed as the President.
