Iyo composite board yebhokisi imba ndeye yakakosha girazi wool sandwich board.Izvo zvinhu hazvibatike uye zvine nzvimbo yakakwira yekunyungudika, inogona kusvika pachiyero chemoto chekirasi A. Huremu hwegirazi wemvere dzemagirazi ndeye 64kg / m3, iyo thermal conductivity inogona kunge iri pasi kana kuenzana ne0.032w/m * k, uye iyo inzwi rekudzivirira coefficient yakakura kupfuura kana kuenzana ne30dB, iyo inogona kunyatso kudzikisa kukanganiswa kweruzha, kunyanya ruzha rwemukati rwunokonzerwa nekunaya kwemvura, chimvuramabwe nezvimwe zvivakwa.