https://www.windpowermonthly.com/article/1137943/service-maintain-wind-turbine-blade
http://www.globalsources.com/si/AS/Shanxi-Fenxi/6008831327401/pdtl/Wind-turbine-generator/1066284657.htm
https://www.pinterest.com/pin/387802217884165680/
https://www.siemens.co.uk/en/news_press/index/news_archive/2014/major-uk-offshore-wind-manufacturing-site-to-be-built-by-siemens.htm
http://www.darvill.clara.net/altenerg/wind.htm