A brief discussion on the applicability of Class A insulation materials

the promulgation and implementation of gongxiao [2011] no. 65 has had a great impact on the exterior wall insulation market. this regulation is strictly implemented in gongtongzi [2009] no. 46. insulation materials must use grade a insulation materials, which makes the selection of insulation materials very narrow. currently, grade a insulation materials on the market…