http://www.pv-tech.org/news/single_axis_pv_module_trackers_to_dominate_us_ground_mount_installations_ih

Redakcja
23-03-2015

http://www.pv-magazine.com/news/details/beitrag/ihs–global-single-axis-tracker-revenues-to-reach-2-billion-in-2019_100018728/#axzz3VClUoaqo

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