... ,economic,pracicability.3,Reliable and durability:under no wind and solar conditions can keep lighting 4days,above 10 hours per day ... R & D and manufature of small wind turbines2.Rapidly delivery,200 sets or less,shipping within a day3.Quality assurance,unconditional ... 't need to pave electric wire new power 50w wind solar street light solar panel 150wp lighting 10hours per days