... :We can design and supply Roof mounted bus air conditioner up to your requirement with our own R&D team. ... 200Rear engine,roof unit,double system(WX22*2),domestic compressor,8m - 9m(for low temperature region)6TSZQD22B3180004403500*1830*200Rear ... engine,roof unit,double system(PLM22*2),domestic compressor8m-9m7TSZQD22BL2180004403500 ...