... and on-grid system 5.CE certificate wind energy street light Effsun wind &solar powered streetlight characteristic:1,Comply with ... :reliable,economic,pracicability.3,Reliable and durability:under no wind and solar conditions can keep lighting 4days,above 10 ... production process using the most advanced RTM .Product Informationa. Wind turbine generator have mechnical yawing automatic, blades lost speed ...