trailer 1.30t-50t towing mass 2.6X4 3. New brand trailer Truck modelSTQ4250L7Y9S3Approach angle25° ColorRed, ... ,9.41,7.31,5.71,4.46,3.48,2.71,2.11,1.64,1. ... high-roof,rear mechanical type suspension,3 seats,with sleeper, with air condition Chassis frameReinforced,Frame breadth 300mm, ... Service brake:dump-type air brake,2.Parking brake:spring type air shut-off brake,3.Assistant brake:engine exhaust ...