Usilika wemvelo kamalibhele, uzizwe u-silky okhanyayo, ophefumulayo futhi unobungani besikhumba, umphetho womshini oqinile, umugqa oqhubekayo, ikhwalithi ephezulu.
Ukuphrinta kwedijithali, umbala ocebile, umbala okhanyayo, udayi wokuvikela imvelo, uhlangabezana nezindinganiso ze-EU, nombiko wokuhlola we-SGS.