Rubber nkwonkwo, dị ka n'ibu njikọ, na ọtụtụ-eji ubi dị ka chemical engineering, mmanụ ala, shipbuilding, wdg Mgbe eji ya, anyị mbụ mkpa ikpe ikpe ya àgwà iji hụ na ya nkịtị ọrụ na nchekwa.A na-anwalekarị n'ihe gbasara ọdịdị, isi ike, nguzogide corrosion, stretc...
GỤKWUO