| May 1942 | 
Tojo Factory, Denki Kagaku Kogyo Kabushiki Kaisha, was established. | 
| November 1953 | 
Nitto Funka Kogyo K.K. was established. The business was taken over. | 
| April 1954 | 
Tokyo Branch was established. | 
| August 1954 | 
Ultrafine Powder NS was placed on market. | 
| June 1959 | 
Ogoe Factory was established in Ogoe-machi, Fukushima. | 
| August 1965 | 
Tokyo Warehouse was completed in Soka City, Saitama. | 
| October 1967 | 
Fukushima Factory was completed (Ogoe Factory was merged). | 
| April 1968 | 
Osaka Talc Industrial was merged and renamed Osaka Factory. Research Institute was established on the same premises. | 
| June 1969 | 
A new Research Institute building was completed. A former building was reconstructed. | 
| April 1974 | 
The land acquisition was made for Osaka Warehouse. An annex to the warehouse was constructed (the facility of Osaka Factory was transferred to Tojo Factory). | 
| August 1974 | 
Shimotaki Factory, Tojo Factory, was completed. | 
| August 1974 | 
Suzuka Factory was completed. | 
| February 1975 | 
Nagoya Office was established. | 
| November 1975 | 
Adachi Mine (in Fukushima Prefecture), a mine of long porcelain stone, was purchased. Materials for porcelain were put on market. | 
| March 1976 | 
Okayama Office was established. | 
| April 1977 | 
Tokyo Branch was promoted to Tokyo Office. | 
| April 1977 | 
A new company building and a new warehouse were constructed in Nishiyodogawa-ku and the headquarters and Osaka Branch were moved for streamlining. | 
| April 1977 | 
Osaka Research Institute was promoted to Central Research Institute. | 
| May 1977 | 
The stone-crushing site of Fukushima Factory was reconstructed and an annex was added to establish Takine Factory. | 
| October 1978 | 
The facility at the stone-crushing site of Suzuka Factory was modified to complete a 400m conveyor for the direct transfer to the factory. | 
| March 1979 | 
The sales division was separated to establish Nitto Funka Trading Co., Ltd. | 
| April 1980 | 
Taipei Branch, Nitto Funka Trading Co., Ltd., was established in Taipei City, the Republic of China. | 
| April 1980 | 
A calcium carbonate factory was completed in Dong Shan, Yi Jian, in cooperation with Taiwan Plastic Industry Co., Ltd. | 
| January 1981 | 
Nitto Singapore Pte Ltd., a joint venture company for sales, was established in Singapore. | 
| May 1981 | 
Osaka Branch was promoted to Osaka Office. | 
| March 1982 | 
The development of Izaka Zeolite Mine, Fukushima, was initiated. | 
| January 1985 | 
The development of Shiroishi Zeolite Mine, Miyagi, was initiated. | 
| January 1985 | 
Shiroishi Factory, Miyagi, started productive operation. | 
| August 1987 | 
Adachi New Factory, Fukushima, was completed. | 
| January 1991 | 
Izaka Factory, Fukushima, was completed. | 
| September 2000 | 
Teruya Fujii, founder and former president and representative director, died. Masanobu Fujii took over president and representative director. | 
| July 2003 | 
Fukushima Factory and Mine was certified with ISO9001:2000. | 
| December 2004 | 
Tojo Factory and Mine was certified with ISO9001:2000. | 
| March 2006 | 
A vertical mill (KVM-100F) crushing facility was completed at Fukushima Factory. | 
| April 2006 | 
A compost soil facility was completed at Tojo Factory. | 
| May 2006 | 
Suzuka Factory and Mine was certified with ISO9001:2000. | 
| July 2006 | 
Shiroishi Factory and Mine, Izaka Factory and Mine, and Adachi Factory were certified with ISO9001:2000. | 
| June 2007 | 
Onari Storage Yard, Kiyosen Mine, was completed. | 
| August 2007 | 
ISO9001:2000 certifications of Nitto Funka Trading Co., Ltd. and each factory were integrated (into a certification to Nitto Funka Trading Co., Ltd.). | 
| October 2007 | 
Kiyosen Mine was awarded for the mining safety by the Minister of Economy, Trade and Industry. | 
| February 2008 | 
Tojo Factory was awarded as an "Excellent Energy Controlling Factory" by the Director-General of the Chugoku Bureau of Economy, Trade and Industry. | 
| June 2008 | 
A vertical mill (KVM-60F) crushing facility was completed at Fukushima Factory. | 
| June 2009 | 
A compost soil facility was completed at Fukushima Factory. | 
| August 2009 | 
A vertical mill (KVM-100F) facility was completed at Tojo Factory. | 
| October 2010 | 
Shonai-Shiroishi Mine was awarded for the mining safety by the Minister of Economy, Trade and Industry. | 
| May 2011 | 
The sales management system was renewed. | 
| October 2011 | 
Natsumori Mine was awarded for the mining safety by the Minister of Economy, Trade and Industry. | 
| February 2012 | 
A new loading silo facility was completed at Kiyotsune Mine. | 
| July 2012 | 
A zeolite drying facility was completed at Izaka Factory. | 
| February 2013 | 
The quality control system was renewed. | 
| April 2013 | 
A bagging facility for MAMACALSO, food additive, was renewed at Tojo Factory. | 
| June 2013 | 
An atomic absorption spectrophotometer was introduced at Tojo Facility. |