JLY6101SA CNG bus is a  type of NGV(Natural Gas Vehicle),which use the nacture gas as the fuel.The chassis is special for double-decker bus,which adopts one-step design,three-segment truss structure,hydraulic power steering,5-speed manual transmission,far-distance operation,steyr passenger bus axle,double-circuit air brake,storage spring exhaust brake.there is also optional equipment as central lubricationsystem,tachograph,rabbir-era shape reversing mirror,upper&lower and reversing monitor,electronic line board,and electronic stop announcer,etc.Various choices of domestic and foreign  Euro 2 engines times measure up the new requirement of city environment protction.