Innovative science and technology.Easy to use and various kinds of controlling way.Long distance air supply. Reliable trust and high life-span cooling and heating distribute much more with self-balanced system. Save energy up to 30% : Using more vortex compressor system,according to different indoor unit burden operating different compressor. It can reach the max 12 level,meets the user?s demand to offer ?cooling ? or ?heating ?mode. Flexible match and free design: With the control of advanced BS assignment device,it can make the refrigerant flow in linear way, so that it can make the indoor units match freely.The high fall of the length of the tubing is up to 80meters ,and the fall of the indoor unit and outdoor is up to 30meters. Recommended schemes and advantage analysis: Only one outdoor unit,install draughts according to different demands.The structure tends to be more reasonable,not only space saving, but elegant appearance looking .Allocating energy synthetically,more rooms comfortable,low noise operation,feel more comfortable.Ducted adopt embedded way of blowing ,fully consider the different temperature between the indoor and outdoor .Make you feel much more comfortable.