Trailer PartsChina Demaisi T9, T12, T16, T20, T24, T30, T27, T36 Brake Chamber Diaphragm for Truck Trailer and Heavy Duty, Find details about China Cylinder, Brake Cup from Demaisi T9, T12, T16, T20, T24, T30, T27, T36 Brake Chamber Diaphragm for Truck Trailer and Heavy Duty