Chongqing Dojohn technology Co., Ltd, a professional manufacturer of General-purpose engines and all kinds of auto and motorcycle parts, located in Chong Qing, southwest of China. Our North America branch is located in Boston, Massachusetts, USA. Our main products include Aluminum alloy parts such as Engine Crankcases and Covers, Gasoline Engine Case and Cover, powder metal parts such as gears, gasoline engines, gasoline generators/welders, water pumps, tillers and construction power equipments (a wide variety of plate compactor, power trowel, roller, tamper rammer and concrete cutter). With current annual production capacity of 2 million units.