Ana amfani da kayan kumfa mai mahimmanci a cikin sufuri, kayan wasanni, jiragen ruwa, sararin samaniya, kayan ado, kayan ado, da dai sauransu kayan wasan yara, kayan kariya da masana'antu.Bukatar kasuwar kumfa tana karuwa akai-akai.Bisa kididdigar da cibiyoyin bincike suka yi, ya...
Kara karantawa