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The non-renewable energy sources such as coal, oil and natural gas on the earth face exhaustion due to excessive exploitation. The development of low-carbon economy becomes the only way for sustainable development of human society. Since the beginning of the 21st century, the low-emission photo-voltaic power generation and wind power generation industry have been developing rapidly in China. From the early stage of development, Taikai staff has taken the initiative to assume the social responsibility to provide first-class step-up equipment for photo-voltaic power generation and wind power generation. The company continuously gropes, makes innovation and has continuous developed XBW series of wind power used with prefabricated substation, ZGS, ZFS series wind power used combined substation, FZB series & FZB2 functional wind power combined substation, FZB functional photo-voltaic combined substation, ZG(F)S photo-voltaic American type combined substation, IDDS intelligent distributed 35 kv switching station. All products adopt advanced full natural ventilation cooling structure, specially designed sealing structure which make the protection class to IP54 so as to guarantee the safe operation of the product under various site environment. The domestic market share for many years ranks the first in the country. Products are applied in batch quantity in wind power generation projects of large power generation companies such as Huaneng, Datang, Huadian, Guodian, Guoneng, CGN, and China Energy Conservation. More than 10,000 products have been operating safely at project site.