diesel engine China Zhejiang Wanhao Machine Science and Technology Co Ltd., is one of the few companies in mainland China that has patents on its motor designs. That means you won't have problems with IP protection laws when you source our power generators, water pumps, pressure washers, diesel engine, small diesel engine, industrial diesel engine, diesel generator engine, marine diesel engine ,general purpose diesel engine and other motor-driven items, even in strict regions such as North America and Europe. Our company designs and manufactures general purpose gasoline engines from 2.6Hp to 13.5Hp, gasoline generators from 1kW to 10kW, water pumps from 1.5 inches to 4 inches, diesel engine, small diesel engine and pressure washers at 1800PSI, 2500PSI and 2700PSI. View more products at our showroom and contact us today.