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History

1950's

1954
Established MTP KASEI CO., LTD.
1956
Started production of polyethylene pipe "AIPOLY".

1960's

1961
Started production of anti - freezing insulation for water pipes made from soft urethane "Foam Edge".
1966
Established Housing and Construction Materials Division
1969
Started production of rigid urethane insulation "Pipe Guard ™"

1970's

1971
Started production of polyethylene insulation "light cover ™"
1973
Started production of "Light Tube ™": Polyethylene insulation by extrusion.
1975
Started production of "IPO TUBE": Copper pipe with insulation by extrusion.

1980's

1980
Founded new company "INOUE MTP CO., LTD." by merger of " MTP KASEI CO., LTD. "and INOUE RUBBER CO., LTD.
1984
Started production of copper pipe for air-conditioner "IPO TUBE A type"
1988
Started production of a PEX pipe "AIPOLY XL"
1989
Started production of covered copper pipe for air conditioner "IPO TUBE ASK"
Launched the flare electric tool for air conditioning "Flare man"

1990's

1990
Changed company name to INOAC CORPORATION.
1991
Started production of outdoor cosmetic case for air conditioning "Clean duct"
1992
Started production of under floor heating system.
Developed "Onsen pipe" made from crosslinked polyethylene with insulation.
1999
Started production of PEX pipe "OYU-POLY Tube®" for in - house water supply.

2000's

2000
Acquired ISO 9001 certification
2001
Acquired ISO 14001 certification
2004
Started production of "U-Poly pipe" for geothermal heat exchange system.
2007
Launched multi-layer aluminum tubes for heat pumps.
2008
Changed company name to"INOAC Housing & Construction Materials Co., Ltd."
Launched leak-free "Correct Flare Nut" for air-conditioners.
Launched insulation welding tool "Mr. Heat Bond"
2009
Launched one-touch fitting for multi-layer aluminum pipes.
Launched flare less fittings for aluminum pipes "Conic Joint"

2010's

2010
Launched raised access floor "NeoFOSPA®"
2012
Started production of high density polyethylene double layer pipe "AIPOLY BROADPIPE series"
2013
Merged with INOAC TOKUZAI Co., Ltd.
2015
Opened the Ibigawa plant.
2016
The 50th anniversary.
Started production of polyethylene pipe in Indonesia.