1, CLASS B1air conditioner 2 used for separate air conditioners 2,heat reservation pipe 3,sound ... 4 GB Rohs BS476 Thermal CLASS B1 air conditionerused for separate air conditioners was made by soft materials ... cold/hot medium piping and containers in central control air condition,construction,chemical industry,medicine,light industry,textile . ... T16259Temperature°C-40°C——110°CGB/T17794 air conditioner