A cikin duniyar da ta ci gaba ta fasaha, ƙirar ƙirar mai amfani tana taka muhimmiyar rawa wajen haɓaka ƙwarewar mai amfani na na'urori da kayan aiki daban-daban.Wata sabuwar hanyar warwarewa wacce ta sami shahara sosai shine canjin membrane na PCB.Wannan labarin yana bincika ƙaƙƙarfan maɓalli na PCB membranes, abubuwan haɗin su, ƙa'idar aiki, fa'idodi, aikace-aikace, la'akari da ƙira, tsarin masana'antu, kiyayewa, da abubuwan da ke gaba.