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Thermal Insulation Material for Building Roofs and Walls Glass Wool Insulation R-Value Fiberglass Wool with Aluminum Foil, Find Details and Price about Themal Insulation Materials Glass Wool from Thermal Insulation Material for Building Roofs and Walls Glass Wool Insulation R-Value Fiberglass Wool with Aluminum Foil - Hebei Liangpeng New Material Co., Ltd.