... , trailer genset,shangchai series 2, 4 or 2 wheels, air brake or manual brake 3, Convenient moving 4, 1 year warranty Trailer genset ... each corner of the trailer.5, Inertial traveling brake, station brake & disengage emergency brake between trailer and tractor 6, With turning lamp ... with high vacuum exhaust injection equipment, spiral-flow type air filter, and low temperature piston ring to make sure ...