Introduction Chassis description 25 tons -30 tons of Sinotruk Howo heavy duty wrecker and rescue trailer with four 8×4 rear, 380 horsepower in the 8×4 chassis, original air conditioning, central locking, electric doors and windows, ABS Modification instructions 25 tons -30 tons of Sinotruk Howo heavy duty wrecking and rescue trailers, the first four and the rear eight heavy-duty wrecking …