发明申请
US20050238848A1 Roofing materials 审中-公开
屋顶材料

Roofing materials
摘要:
A roofing or siding system having an improved average resulting reflectivity. The roofing and/or siding system is at least partially coated with a plurality of granules. The granules have an average reflectivity of at least about 55% and an average hardness of over about 3 Moh's.
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