... MISS:We can design and supply Roof mounted bus air conditioner up to your requirement with our own R&D ... system,with Bitzer compressor(4NFCY) , fresh air new concept A/C,imported fan 11m -12m21TSZYD33/3528000/ 300006473580*1950*200Rear ... fan, fresh air, CAN control:12m -13m23TSZQD40340008365600*1830*200Rear engine,single system,with Bitzer compressor(6PFCY)12m -14m Roof mounted bus air conditioner