Le mveliso isetyenziswa kwi-petroleum, iikhemikhali, i-metricjecal, i-surmaceutication, izixhobo zoomatshini, ishishini lokunganyangeki, ukunganyangeki, ukunganyangeki, Acid noAlkali - Ukuxhathisa, hlalani. Umphezulu unyangwa, ugudileyo kwaye uBurr - Isimahla, ngaphandle kokukhulisa, kulula ukufaka kwaye kuyasebenza ngokubanzi.
