Chofu Seisakusho Co., Ltd was established in Chofusamuraimachi,Shimonoseki with a capital of 5 million Yen and started production of agricultural machinery.

Kerosine-fired burner for drying rice/wheat in husk was developed. (the product that prompted Chofu's later growth)

Developed hot water boilers for residential use and advanced into the field of housing equipment.

Developed the industry-first instantaneous kerosine boilers.

Started production of stainless steel bathtubs and washstands with a view of becoming a manufacturer of general housing equipment.

Started production of air conditioners for residential use.

Started production of solar powered water heaters.

Listed on Hiroshima Stock Exchange.

Started production of kerosine-fired fan-driven space heaters.

Headquarters office was moved to the current location.

Started production of gas-fired water heaters.

Started production of bathtubs made of artificial marble.

Started production of system bathrooms.

Headquarters plant acquired ISO9001 certification.

Listed on the 2nd Section of Osaka Stock Exchange.

Utsunomiya plant acquired ISO9001 certification.

Started sales of system kitchens.

R&D center was completed at the headquarters.

Started production of solar-powered under-floor ventilators.

Listed on the 1st Section of Tokyo Stock Exchange. Listed on the 1st Section of Osaka Stock Exchange.

Started production of newly developed solar water heaters.
(New energy grand prix award of 2000)

Started sales of solar power generation systems.

Started production of hybrid & Multi air conditioners with auxiliary kerosine-fired water heaters.

Started production of wall-mount gas-fired bath water heaters with circulation pump.

Started production of electric water heaters with intercom-capable remote controller.

Started production of Ecocute, CO2 heat pump water heaters.

Shiga plant acquired ISO9001 certification.

Started production of gas engine-driven Co-generation system for residential use.

Headquarters plant at Shimonoseki acquired ISO14001 certification.

50th anniversary

Started production of bathroom heater dryers with mist-sauna function.
Started production of highly-efficient oil-fired water heaters.

Started production of high-end, wide-type BBW series system bathrooms.

Opened Tokyo sales office.

Started production of oil-fired water heaters with latent heat reclaim systems.

Started production of hybrid solar water heater systems.