Fa'idodin kariyar injin:
1, An tsara kwamitin kariyar injin din bisa ga nau'ikan samfuran kariyar injin, da aka fara ne don hana kasar gona da injin zafi;
2, na biyu, don hana lalacewar injin da aka haifar da tasirin hanyar tuki, ta hanyar lalacewar motar saboda abubuwan da injin ke haifar da lalacewa saboda tsarin tafiya.
3. Bayan yanayin aiki na injin ya kasance mai girman kai, mai tazara yana taqaice. Raurin kula da tsari iri ɗaya ne na zuwa kasashen waje 15,000 a shekara, kuma za a gajarta ga nisan kilomita 10,000 a kasar Sin. Lokacin tabbatarwa yana taqaitaccen, kuma farashin tabbatarwa yana ƙaruwa sosai.
