Le milenze yensimbi yakhiwe ukuze imelane nemithwalo esindayo, imelane ne-oxidation nokugqwala, futhi ihlanganiswe ngaphandle komthungo ibe ifenisha ehlukahlukene. Ngomklamo wazo oshelelayo nowesimanje, azinikezi nje kuphela ukwesekwa okuhle kodwa futhi zithuthukisa ubuhle befenisha yonke.