HISTORY
1950s
-1954
Established "MTP KASEI CO., LTD."
-1956
Started production of polyethylene pipe "AIPOLY"
-1957
Started production of electric cover "Wire coating cover" (the world's first)
1960s
-1966
Established Housing and Construction Materials Division.
-1969
Started production of rigid urethane insulation "Pipe Guard"
1970s
-1971
Started production of polyethylene insulation "Light Cover ™"
-1973
Started production of polyethylene insulation "Light Tube"
-1975
Established "Aishin CO., LTD."
Started production of "IPO TUBE"
1980s
-1980
Founded a new company "INOUE MTP CO., LTD." by merger of "MTP KASEI CO., LTD." and "INOUE RUBBOR CO., LTD."
-1983
Name changed to Housing Equipment Division
-1984
Started production of insulated copper pipe for AC "IPO TUBE A type"
-1988
Started production of a PEX pipe "AIPOLY XL ( OYU-POLY)"
-1989
Started production of insulated straight copper pipe "IPO TUBE ASK"
1990s
-1990
Changed the company name to "INOAC CORPORATION"
-1991
Started production of a AC trunking "Clean duct"
-1994
Started production of "IPO TUBE A type" overseas
-1999
Started production of PEX pipe "OYU-POLY Tube®"
2000s
-2000
Certified to ISO 9001
-2001
Certified to ISO 14001
-2004
Started production of "U-Poly pipe" for geothermal heat exchange system.
-2008
Changed the company name to "INOAC Housing & Construction Materials Co., Ltd."
Launched leak-free "Correct Flare Nut" for AC.
-2009
Launched flare-less fittings for aluminum pipes "CONIC JOINT"
2010s
-2010
Launched raised access floor "NeoFOSPAⓇ"
-2012
Started production of high density polyethylene double layer pipe "AIPOLY BROADPIPE"
-2013
Merged with "INOAC TOKUZAI Co., Ltd."
-2015
Start-up of the Ibigawa mother plant.
-2016
50th Anniversary
Started production of polyethylene pipe in Indonesia
Received the Minister of the Environment Award for Global Warming Prevention Activities 2016
-2017
Started production of double layered PEX pipe "OYU-POLY Tube UP"
-2019
Established "PT. INOAC Construction Materials Indonesia (ICMI)"
Started production of drain up hose "Drain-up hose LIGHTⅡ"
2020s
-2020
LLaunched high-performance thermal insulation for clean rooms "T-FIT" and "T-FIT Hygiene"
Launched a plastic heat exchanger "G-HEX"
-2021
Started production of high performance rigid polyurethane foam insulation "Pipe Guard AG"
-2022
Launched a sound absorbing material for drainage water "Sound Absorbing CoverⅡ"
-2023
Launched PE pipe fitting "IN Joint"
-2024
Launched a polyethylene pipe(AIPOLY) for hot springs "AIPOLY Heat Flex"
