These solar glass blocks would make great skylights for your solar roof https://t.co/B86DFsmqz8 https://t.co/sHU3nwkdk9 #gogreen
— martinengwicht (@martinengwicht) August 19, 2017
from Twitter https://twitter.com/martinengwicht
learning by doing
These solar glass blocks would make great skylights for your solar roof https://t.co/B86DFsmqz8 https://t.co/sHU3nwkdk9 #gogreen
— martinengwicht (@martinengwicht) August 19, 2017
from Twitter https://twitter.com/martinengwicht