Advantages: hidden, do not occupy the room; there is only one outdoor unit. Compared to ordinary wall-mounted air conditioners, it feels comfortable and the effect is obvious. It is more energy-saving if you want to. Disadvantages: hidden type, need to cooperate with the ceiling, occupies part of the floor height; separate open air conditioning in a room, than the hook power consumption. Overall, central air-conditioning in the home is a trend. Although it is not possible to replace wall-mounted air conditioners in the future, the market share will increase. At present, the market is relatively good: Daikin, York, Mitsubishi; domestic brands Gree and the United States with the improvement of technology, the proportion of the market share is also increasing SiRUBA Sewing Machine Thread Tension Thread Tension Asm For Siruba ,Siruba C007 Sewing Machine,Siruba C007 Sewing Machine Parts ,Mk28J-A Thread Tension Asm sewshimano , https://www.nb-fzysewing.com