Rooftop Concentrating Photovoltaics Win Big Over Silicon In Outdoor Testing https://t.co/jQyn9VwBKE https://t.co/97dZV6PHY4
— Quality Roofing Pros (@QRoofingPros) July 26, 2017
from Twitter https://twitter.com/QRoofingPros
July 26, 2017 at 06:11AM
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