E sebelisoa haholo lits'ebetsong tsa polokeho, lik'hemik'hale, polokelo ea metsi, petrochemical, indasteri e akaretsang, bophelo ba letsatsi le letsatsi, borokho, tsela e kholo.
1. Sebopeho se tsitsitseng.Sebaka se boreleli, matla a ts'oanang, ts'ehetso ea ho etsa machining
2. Khetha thepa ka tieo.Khetho e thata ea lisebelisoa tse tsoang mohloling, ts'ebetso ea sehlahisoa e thata.
3. Thepa e babatsehang.Tiisetso ea boleng ba moetsi oa mohloli, bophelo bo bolelele ba tšebeletso.
4. Tlhahiso e ngata.Phepelo e lekaneng, tlhahiso le ts'ebetso ea mechine e mengata, mefuta e fapaneng ea litlhaloso, phepelo e tsitsitseng le e lekaneng.