KINGCLIMA CO2(R744) bus air conditioner is our new design bus air conditioner system, this system use CO2(R744) as refrigerant to realize the real zero pollution of refrigerant. KINGCLIMA as the professional air conditioner manufacturer, we have been committed to the development and improvement of air conditioning. Currently kingClima’s CO2 air conditioner has been put on the road for testing and will soon be put on the market.