Walbro have factory in China more than 20 years . and start to build small carb about 2011 . we just order the carb that fit what we need . no matter it build in Walbro China factory or import from Japan. same quality and almost same price . for the 64CC single engine and 60CC twin, sure 64cc single engine go with this program. but for 60CC twin . not sure until the factory tell us "GO" . and we do that . (60CC twin engine is not from AGM. it's from other engine factory .so we need permit from engine factory to do that . I let you know when engine factory OK or not.