what are the commonly used grade a insulation materials for building exterior wall insulation?

what are the commonly used grade a insulation materials for building exterior wall insulation?

whether building exterior wall insulation materials are flammable or flammable is a topic that people are currently very concerned about. below we will briefly introduce the types of non-combustible class a insulation materials currently used for building insulation. class a insulation materials for building exterior walls1. rock wool board. rock wool board is made of…

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