| 1942年05月 |
Tojo Factory, Denki Kagaku Kogyo Kabushiki Kaisha, was established. |
| 1953年11月 |
Nitto Funka Kogyo K.K. was established. The business was taken over. |
| 1954年04月 |
Tokyo Branch was established. |
| 1954年08月 |
Ultrafine Powder NS was placed on market. |
| 1959年06月 |
Ogoe Factory was established in Ogoe-machi, Fukushima. |
| 1965年08月 |
Tokyo Warehouse was completed in Soka City, Saitama. |
| 1967年10月 |
Fukushima Factory was completed (Ogoe Factory was merged). |
| 1968年04月 |
Osaka Talc Industrial was merged and renamed Osaka Factory. Research Institute was established on the same premises. |
| 1969年06月 |
A new Research Institute building was completed. A former building was reconstructed. |
| 1974年04月 |
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). |
| 1974年08月 |
Shimotaki Factory, Tojo Factory, was completed. |
| 1974年08月 |
Suzuka Factory was completed. |
| 1975年02月 |
Nagoya Office was established. |
| 1975年11月 |
Adachi Mine (in Fukushima Prefecture), a mine of long porcelain stone, was purchased. Materials for porcelain were put on market. |
| 1976年03月 |
Okayama Office was established. |
| 1977年04月 |
Tokyo Branch was promoted to Tokyo Office. |
| 1977年04月 |
A new company building and a new warehouse were constructed in Nishiyodogawa-ku and the headquarters and Osaka Branch were moved for streamlining. |
| 1977年04月 |
Osaka Research Institute was promoted to Central Research Institute. |
| 1977年05月 |
The stone-crushing site of Fukushima Factory was reconstructed and an annex was added to establish Takine Factory. |
| 1978年10月 |
The facility at the stone-crushing site of Suzuka Factory was modified to complete a 400m conveyor for the direct transfer to the factory. |
| 1979年03月 |
The sales division was separated to establish Nitto Funka Trading Co., Ltd. |
| 1980年04月 |
Taipei Branch, Nitto Funka Trading Co., Ltd., was established in Taipei City, the Republic of China. |
| 1980年04月 |
A calcium carbonate factory was completed in Dong Shan, Yi Jian, in cooperation with Taiwan Plastic Industry Co., Ltd. |
| 1981年01月 |
Nitto Singapore Pte Ltd., a joint venture company for sales, was established in Singapore. |
| 1981年05月 |
Osaka Branch was promoted to Osaka Office. |
| 1982年03月 |
The development of Izaka Zeolite Mine, Fukushima, was initiated. |
| 1985年01月 |
The development of Shiroishi Zeolite Mine, Miyagi, was initiated. |
| 1985年01月 |
Shiroishi Factory, Miyagi, started productive operation. |
| 1987年08月 |
Adachi New Factory, Fukushima, was completed. |
| 1991年01月 |
Izaka Factory, Fukushima, was completed. |
| 2000年09月 |
Teruya Fujii, founder and former president and representative director, died. Masanobu Fujii took over president and representative director. |
| 2003年07月 |
Fukushima Factory and Mine was certified with ISO9001:2000. |
| 2004年12月 |
Tojo Factory and Mine was certified with ISO9001:2000. |
| 2006年03月 |
A vertical mill (KVM-100F) crushing facility was completed at Fukushima Factory. |
| 2006年04月 |
A compost soil facility was completed at Tojo Factory. |
| 2006年05月 |
Suzuka Factory and Mine was certified with ISO9001:2000. |
| 2006年07月 |
Shiroishi Factory and Mine, Izaka Factory and Mine, and Adachi Factory were certified with ISO9001:2000. |
| 2007年06月 |
Onari Storage Yard, Kiyosen Mine, was completed. |
| 2007年08月 |
ISO9001:2000 certifications of Nitto Funka Trading Co., Ltd. and each factory were integrated (into a certification to Nitto Funka Trading Co., Ltd.). |
| 2007年10月 |
Kiyosen Mine was awarded for the mining safety by the Minister of Economy, Trade and Industry. |
| 2008年02月 |
Tojo Factory was awarded as an 'Excellent Energy Controlling Factory' by the Director-General of the Chugoku Bureau of Economy, Trade and Industry. |
| 2008年06月 |
A vertical mill (KVM-60F) crushing facility was completed at Fukushima Factory. |
| 2009年06月 |
A compost soil facility was completed at Fukushima Factory. |
| 2009年08月 |
A vertical mill (KVM-100F) facility was completed at Tojo Factory. |
| 2010年10月 |
Shonai-Shiroishi Mine was awarded for the mining safety by the Minister of Economy, Trade and Industry. |
| 2011年05月 |
The sales management system was renewed. |
| 2011年10月 |
Natsumori Mine was awarded for the mining safety by the Minister of Economy, Trade and Industry. |
| 2012年02月 |
A new loading silo facility was completed at Kiyotsune Mine. |
| 2012年07月 |
A zeolite drying facility was completed at Izaka Factory. |
| 2013年02月 |
The quality control system was renewed. |
| 2013年04月 |
A bagging facility for MAMACALSO, food additive, was renewed at Tojo Factory. |
| 2013年06月 |
An atomic absorption spectrophotometer was introduced at Tojo Facility. |
