This is the TATA old bus project for Middle East Country. It mount Guchen BD-06 bus ac units (main engine driven type, rooftop mounted) and equip with DD series independent bus ac units (sub-engine driven type, rooftop unit). ------------------------- BD Series Rooftop Mounted Bus HVAC System: www.guchen.com/bus-air-conditioner/bffd-city-bus-airconditioning-system.html Mail to: info@guchen.com ---------------- Related Links: BD-06: www.guchen.com/bus-air-conditioner/bffd-06.html DD Series: www.guchen.com/bus-air-conditioner/dfdd.html