... 3. best after-sale service 4.35% wind energy utili. 5.CE&ISO VAbout us:SHANDONG ... Co:Ltd is founded in 1994, specialized in manufacturing wind turbines, the main products are 200W, 300W, ... wind direction,use of closed power transmission slip ring,cables are not enwind, constant voltage charging,with over charge, over discharge, AC ... . European standard CE 50kw 0n-grid wind turbine wind driven generator