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1901 Yoshino Group establishment begins with the mining of rough stone gypsum at the Yoshino Mine in Yamagata Prefecture. The current company name derives from its place of origin.
1922 Beginning of manufacture and sale Japan's first gypsum board under the product name of "Tiger Board".
1937 Reorganization into Yoshino Gypsum Co., Ltd. on March 2.
1948 Provision of education regarding gypsum board manufacturing techniques to competing companies in order to develop the industry.
1956 Absorption of Takasago Paper Co., Ltd. as a plant specialized in board base paper production.
1959 Construction of the Tohoku Yoshino Gypsum Co., Ltd. Akita Plant through a joint venture with Tohoku Fertilizer Co., Ltd. The following year, Tohoku Yoshino Gypsum becomes Ryoka Yoshino Gypsum Co., Ltd. with the capital participation of Mitsubishi Kasei Co., Ltd.
1962 Completion of the Ube Yoshino Gypsum Co., Ltd. Ube Plant through a joint venture with Central Glass Co., Ltd.
1963 Upgrading of the Tokyo No. 1 Plant with the industry's most advanced board production technology. Construction of the Sumiko Yoshino Gypsum Co., Ltd. Hokkaido (board) Plant through a joint venture with Sumitomo Metal Mining Co., Ltd.
(Sumiko Yoshino Gypsum becomes Hokkaido Yoshino Gypsum Co., Ltd. in 1969.)
1964 Passing away of President and Director Eiji Sudo. He is posthumously awarded 5th Rank of the Order of the Sun for his achievements.
Appointment of Tsuneo Sudo as the President and CEO.
Start of construction of the Kyushu Plant dedicated to producing new types of board. Construction completes the following year.
1965 Completion of the Niigata Yoshino Gypsum Co., Ltd. Enokimachi Plant through a joint venture with Central Glass Co., Ltd. due to increased demand for YN plaster.
1966 Establishment of a new plaster plant, the Giptek Co., Ltd. Takasago Plant.
Establishment of the Onahama Plant in August of the following year.
Tokyo No.2 Plant is repurposed to produce new types of board.
1968 Acquistion of the Toyo Plaster Board Co., Ltd. Tokyo Plant. The plant is repurposed as the Yoshino Gypsum Co., Ltd. Sohka Plant the following year, and is dedicated to producing new types of boards.
Entry into a business alliance agreement with Rigips Baustoffwerke, a gypsum manufacturer in West Germany.
1969 Completion of plaster production equipment and other facilities at the Yoshino Gypsum Co., Ltd. Chiba Plant, as part of phase one of its upgrade plan.
1970 Start of construction of the Niigata Yoshino Gypsum Co., Ltd. Toko Board Plant intended to effectively utilize the byproduct gypsum produced by Sun Chemical Industry Co., Ltd., and other manufacturers. Construction is completed the following year.
1971 Establishment of Onahama Yoshino Gypsum Co., Ltd. through a joint venture with Onahama Smelting and Refining Co., Ltd.
1972 Completion of phase two of the Chiba Plant upgrade plan.
1973 Establishment of Naoshima Yoshino Gypsum Co., Ltd. through a joint venture with Mitsubishi Metal Co., Ltd.
1977 Technical cooperation with major American gypsum manufacturer, National Gypsum.
1979 Entry into a technical cooperation agreement with one of Australia's largest corporations, CSR.
Closure of the Tokyo No. 2 Plant due to its location conflicting with the Metropolitan Expressway plan. The plant is reolocated to Toyohashi City, Aichi Prefecture, and resumes operation as the Mikawa Plant.
1982 Business cooperation with Taki Kenzai Co., Ltd.
1984 Establishment of the Yoshino Gypsum DD Center Co., Ltd. for the purpose of demand development and systematic design folding activities.
1987 Completion of construction of the Yoshino Gypsum Co., Ltd. Chiba No.2 (board) Plant.
1988 President and CEO Tsuneo Sudo, having already been inducted into the Order of the Sacred Treasure, is also inducted into the Order of the Rising Sun, 3rd class for his achievements in the building materials industry.
Tsuneo Sudo becomes the Chairman of the Board of Directors, and Eiichiro Sudo becomes President and CEO.
1990 A celebration of the 90th anniversary of our founding is held in Tokyo and major Japanese cities.
1991 Establishment of Miyako Calcine Co., Ltd. as a joint venture with Co-op Chemical Co., Ltd., mainly for burning vermiculite (a lightweight aggregate).
1992 Capital participation in Sanyo Paper Industry Co., Ltd. In order to secure a stable supply of base paper for the Western Japan area.
Establishement of Noshiro Yoshino Gypsum Co., Ltd. as a joint venture with Tohoku Electric Power Co., Inc. for the purpose of effectively using waste gypsum.
Establishment of Soma Gypsum Co., Ltd. for effectively using of waste gypsum from Soma Kyodo Power Company, Ltd.
1993 Technical cooperation with BPB, Europe's largest gypsum-related company.
Completion of the Kitakyushu Board Plant that was started one year earlier.
1995 Signing of an import contract for the supplying of locally-produced natural gypsum with Dampier Salt Co., Ltd. of the Rio Tinto Group.
1996 First approval granted by the Minister of Health and Welfare for a business of recycling and utilizing "gypsum board" as a building material.
As a result, "Tiger Board" is designated as a recycled product.
1997 Started selling board products of Nitto Gypsum Board Co., Ltd. through our network based on the Tiger brand.
Completion of the Imabari (board) Plant of Yoshino Gypsum Co., Ltd. in Shikoku (Imabari City, Ehime Prefecture).
1999 Certification under ISO9001 and ISO9002, international standards for quality assurance, by the Yoshino Group.
2000 Takasago Seishi Co., Ltd., a sister company that provides “Board Liners” to Yoshino Group, started operating their most advanced machine.
President Eiichiro Sudo is honored for his contribution to the building materials industry with receipt of the "Medal with Blue Ribbon". A celebration is held to commemorate the medal and over 100 years and three generations of Yoshino Gypsum.
The Mikawa Plant is certified under ISO14001, an international standard for environmental management.
2001 Completion of construction of a comprehensive performance testing center in the Chiba No.2 Plant, boasting world-class experimental facilities.
2002 Completion of construction of the Yoshino Gypsum Toranomon Building on the site of Shimbashi Gypsum Hall.
2004 Passing away of Chairman Tsuneo Sudo.
He is posthumously awarded "Senior Fifth Rank" for establishing technology for the effective utilization of by-product gypsum, and contributing to the fireproofing of buildings and the improvement of living spaces by developing fire-resistant and sound insulation methods.
2005 President Eiichiro Sudo is inducted into the Order of the Rising Sun for his achievements in promoting the gypsum board industry over the years.
2007 "Inheritance of Nippon Fire Light Co., Ltd., now renamed to NBL Co., Ltd. as part of the Yoshino Group. "
Opening of the Kitakyushu Training Center in Kitakyushu City, Fukuoka Prefecture.
Completion of the Chiba No. 3 Plant, with world-class production capacity.
2008 Opening of the Mikawa Training Center in Toyohashi City, Aichi Prefecture.
2009 Establishment of Nihon Solaton Co., Ltd. as part of the Yoshino Group, and starting of the manufacture of "Solaton", a rock wool decorative sound absorbing board.
2010 Commemorative celebration of the 110th anniversary of our founding.
Completion of the Nihon Solaton Co., Ltd. Chiba Plant
Acquisition of the import and sale business of Duracrete from Mitsubishi Rayon Co., Ltd.
2011 Opening of the Kobe Training Center in Kobe City, Hyogo Prefecture.
2012 Opening of the Sendai Training Center in Sendai City, Miyagi Prefecture.
2013 Establishment of PT.YOSHINO INDONESIA, a local subsidiary in Indonesia.
2014 Eiichiro Sudo retired as president and became chairman; Eisaku Sudo succeeded his position as president.
Establishment of Sankei Yoshino Co., Ltd. as part of the Yoshino group and starting of the manufacture and sale of calcined gypsum.
Established TIGEREX Co., Ltd. as a part of Yoshino Group, and started manufacturing and selling ceramic products.
Establishment of an Indonesia Representative Office in Jakarta.
2015 Entry of Asahi Fiber Glass Co., Ltd., a glass wool manufacturing company, into the Yoshino Group.
Passing away of Chairman Eiichiro Sudo.
He is posthumously awarded "Senior Fifth Rank" for his achievements in developing new fields of application of gypsum board by developing new products such as sick house countermeasures, etc. and promoting recycling to protect the environment.
2017 Establishment of a local subsidiary YOSHINO GYPSUM VIETNAM CO., LTD. in Vietnam.
2018 Completion of the PT.YOSHINO INDONESIA Cikarang Plant.
2019 Completion of the Comprehensive Performance Testing Center New Building in the Chiba No.2 Plant.
Beginning of the construction of Ba Ria - Vung Tau Plant of YOSHINO GYPSUM VIETNAM CO., LTD.
Completion of the Asahi Fiber Glass Co., Ltd. Chubu Plant.