kayan ma’adinantarwa
mai hana ƙazantar dutse
resin musayar cation
jagorar zaɓin fasaha
- Tabbatar da haɗin da bukatun aikin kafin neman ƙiyasin farashi.
- Kafin bayar da farashi, tabbatar da girman harsashi, haɗi, sararin shigarwa da damar sauyawa. Yayin gyara, rufe ruwan, saki matsa lamba sannan a duba zare da hatimai.