Taki marufi jakar, hudu gefuna sealing aluminized marufi jakar, mafi kyau kariya daga samfurin, ba sauki don agglomerate, ba tare da rasa tasiri na taki ba, hudu gefuna marufi jakar marufi, sai dai ga shãfe haske a duka iyakar, gefe rungumi dabi'ar hanya. na hatimin zafi mai gefe huɗu, wanda ke faɗaɗa cikin ƙarar jakar marufi.