Zhejiang Wanhao Machine Science and Technology Co, .LtD is one of the few companies in China that has patents on its designs. That means you won&＃039;t have problems with IP protection laws when you source our power generators, water pumps, pressure washers and other engine-driven items, even in strict regions such as North America and Europe. Wanhao has won over many customers around the world because we offer competitive prices and are dedicated to craftsmanship and quality.We have EPA 2006Year Certificate and CE certificate.