About MATSUOKA SHIGEHIKO
About ダイキン工業
About energy saving
About heat pump
About carbon dioxide
About energy efficiency
About hot water supply
About household electric appliance
About 給湯効率
About natural refrigerant
About natural refrigerant heat pump hot water supply system
About technical trend
About Household electric appliances
About Heat exchangers,coolers
About 自然冷媒
About CO2
About ヒートポンプ給湯機
About 技術動向
About 家庭
About 株