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LOL, might want to include a smiley to make it unambiguous the comment was made in jest.
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Quoted for truth.
My benchmark would be sine-wave corrugated galvanized steel or aluminum: 61%.
What about the best material, ETFE foil?
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https://hightex-group.com › material › membrane › etfe-foil
ETFE foils generally have high transparency. We are able to offer white and coloured foils by the addition of pigments. The foil can be colored with patterns so as to control both transmission and reflection properties. Membranes coated with metallic, ceramic or organic low-E materials allow the production of both sun protection and mirror effects.
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