Product feature: 1.Low start wind speed and starting torque, high generating efficiency 2.Permanet magnet wind turbine generator, durable in use 3.Yaw motor system and pitch system, aerodynamic brake & manul brake 4.Glassfibre high efficiency blades 5.Simple construction, easy install and minimal maintenance 6.Service life is more than 15 years Plywood cases or according to your need