... quality warranty2. low noise low vibration3.35% wind energy utilization4. low start wind speedBreif introduction of companyWe are Qingdao Jingfan ... produce vertical axis and horizontal axis wind turbine including 300w, 600w , 1kw, 2kw, 3kw,5kw,10kw. The technique of other ... models is under developing. 5kw vertical wind turbine for residence use