1.Sizokucaphuna inani lenani lemishini obuza ngayo, futhi inqubo iyashesha ukuze ukwazi ukwenza isinqumo ngokushesha.
2. Uma intengo nemibandela yokuhweba ivumelana nawe, sizokuthumelela i-invoyisi ye-proforma. Sicela uhlele inkokhelo nge-TT noma i-LC.
3.Ngemva kokuqinisekiswa kwenkokhelo, sizothumela umshini ngokuvumelana nemibandela yokuhweba ku-invoyisi ye-proforma.