History

SEIHOKU has been making effort to stably supply high quality wooden building material since the start of business in 1954. And since 1967, many companies in the same industry joined our group co-owning our corporate philosophy. We, SEIHOKU provide our know-how and technology guaranteed by the acquisition of ISO09001, ISO14001 which is global standard in order to fulfill the society that is conscious to the recycling of limited resources.

History

1954

Nov
Hiroshi Inoue established SEIHOKU VENEER KOGYO CORPORATION with 2 Million Yen in capital
Dec
Built veneer production factory in Adachi-ku, Tokyo

1956

Oct
Started production of plywood in full-line operation

1963

Sep
Hiroshi Inoue established SEIHOKU PLYWOOD CORPORATION with 10 Million Yen in capital and built veneer factory in Koto-ku, Tokyo

1966

Oct
Built thin veneer production factory in Ishinomaki, Miyagi Pref.

1969

Mar
Built Ishinomaki 2nd factory producing plywood for concrete forms

1972

Jul
Built Ishinomaki 3rd factory producing plywood for structural use

1973

Feb
Established SEIHOKU UNYU CORPORATION in Yashio,Saitama Pref. and built Yashio Logistics Center

1975

Jul
Built Head Offices Building in Hongo, Bunkyo-ku,Tokyo and concentrated the head quarters of the group companies

1978

May
Established TOHOKU SECCHAKUZAI CORPORATION in Bunkyo-ku, Tokyo with the aim of supplying adhesive to SEIHOKU GROUP

1983

May
Established SEIHOKU ISHINOMAKI UNYU CORPORATION and built Ishimnomaki Logistics Center

1988

Dec
Established SEIHOKU COAT CORPORATION in Ishinomaki and ROSE COAT CORPORATION in Yashio by spinning out plywood coating & processing divisions

1990

Jan
Built PB (Particle Board) factory in Ishinomaki
Apr
Changed company's name to SEIHOKU CORPORATION
April
Established SEIHOKU HOME CORPORATION building 2X4 Houses

1991

Dec
Built LVL factory (SEIHOKU PLYWOOD CORPORATION) in Ishinomaki

1995

Jun
Built MDF factory in Ishinomaki

1996

Jan
Built conifer veneer factory (SEIHOKU PLYWOOD CORPORATION) in Ishinomaki

1999

Apr
Atsuhiro Inoue became President & CEO of SEIHOKU PLYWOOD CORPORATION
Established SEIHOKU LOGISTICS CORPORATION by the merger of SEIHOKU UNYU CORPORATION and SEIHOKU ISHINOMAKI UNYU CORPORATION
Dec
Awarded the 1st Eco Products Awards (by The Ministry of Agriculture, Forestry and Fisheries Award)

2000

Nov
Plywood Division and PB · MDF Division acquired ISO9001

2001

Aug
Built Seihoku Kankyo Techno Center in Ishinomaki and established co-generation system
Dec
Plywood Division and PB · MDF Division acquired ISO14001

2002

Jun
ROSE COAT CORPORATION was merged to SEIHOKU COAT CORPORATION
Jul
Established SEIHOKU WITH CORPORATION producing flooring materials in Koga, Ibaraki Pref.

2003

Nov
Established SEIHOKU BUILD CORPORATION in koga and started production of pre-cut component for housing

2004

Oct
Awarded the 3Rs (Reduce, Reuse, Recycle) Award 2004 (by The Ministry of Land, Infrastructure and Transport Award)
Dec
Awarded the 1st Eco Products Awards (by The Ministry of Agriculture, Forestry and Fisheries Award)

2005

Sep
Extended long conifer veneer line in Ishinomaki 1st factory

2006

Jan
Built biomass energy plant in Ishinomaki
Aug
Established SEIHOKU BUILD CORPORATION producing pre-cut component for housing in Tagajyo, Miyagi Pref.

2007

Dec
Built veneer production factory using domestic lumber (SEIHOKU PLYWOOD CORPORATION) in Ishinomaki

2008

Mar
Acquired veneer production factory using domestic lumber (SEIHOKU PLYWOOD CORPORATION) in Ishinomaki
Aug
Built the Seihoku Gallery,Yayoi Auditorium Annex in The University of Tokyo
Sep
Awarded the Shokumon Award 2008 (by The University of Tokyo)

2011

Feb
Awarded the Grand Prize of Use of Renewable Energy in Tohoku, Biomass Energy Section (by The Tohoku Bureau of Economy, Trade and Industry)
Oct
Awarded the Kizukai Promotion 2011 (by A letter of appreciation from The Ministry of Agriculture, Forestry and Fisheries)

2012

Jan
Acquired 11.2ha of forest in Tome, Miyagi Pref.
Mar
SEIHOKU CORPORATION acquired the COC Certification of the FSC and the COC Certification of the PEFC
Apr
Closed down SEIHOKU WITH CORPORATION
Oct
Awarded the 3Rs (Reduce, Reuse, Recycle) Award 2012 (by The Prime Minister Award)

2014

May
Established FORESTRY DEPT.  (FORESTRY & MATERIAL SUPPLY DEPT.)
Started thinning of the forest and producing of seedlings
Jul
Started approx. 870,000 kwh/y solar power generation in Nishihama-cho, Ishinomaki
Aug
Acquired 13.7ha of forest in Ishinomaki
Sep
Started approx. 350,000 kwh/y solar power generation in Shigeyoshi-cho, Ishinomaki
Nov
Started exporting domestic conifer plywood

2015

Sep
Established raising seedling facility including plastic greenhouse and seedling bench for 15,000 containers in Ishinomaki

2016

Apr
Started production of CLT (Cross Laminated Timber) in Ishinomaki (SEIHOKU PLYWOOD CORPORATION)
Sep
Acquired 51.2ha of forest in Tome

2017

Mar
Acquired the COC Certification of the SGEC instead of the PEFC
May
Established SEIHOKU TECH CORPRATION producing pre-cut component for housing in Koga and Tagajo.
Acquired 33.5ha of forest in Ishinomaki
Aug
Closed down SEIHOKU BUILD CORPORATION

2019

Feb
Acquired site for the new factory in Ishinomaki
Jun
Acquired naminig rights of the Ishinomaki General Athletic Park and named
“SEIHOKU PARK ISHINOMAKI ”
Sep
Awarded the National Forest Seedling Competition 2019 (by The Director General of Forestry Agency Award)

2020

Feb
Produced plywood with a thickness of 50mm (trademark CLP) and acquired the JAS (Japan Agricultural Standards) Certification for the first time in Japan

2022

Mar
Built Ishinomaki 4th factory producing plywood made from 100% domestic logs.
Extended raising seedling facilities including plastic greenhouse and seedling bench for 50,000 containers in Ishinomaki

2023

Mar
Construction and relocation of the new office for SEIHOKU HOME CORPORATION in Ishinomaki