... ,roof unit,single system(F400Y), Bitzer compressor,domestic fan8-9m14TSZQD28240005583960*1830*200Rear engine,single system, Bitzer compressor(4PFCY)9m-10m15TSZQD28A260006263960*1830*200Front engine,double ... system, with WX32* or PLM32*2 compressor (domestic product)10m16TSZQD33A280006264660* ...