Hauv cov txheej txheem tsim khoom ntawm kev lag luam qab zib, chains tuaj yeem siv rau kev thauj mus los hauv qab zib, kua txiv extraction, sedimentation thiab evaporation. Nyob rau tib lub sij hawm, lub siab coj thiab muaj zog corrosion tej yam kev mob kuj muab rau pem hauv ntej ntau dua yuav tsum tau rau cov zoo ntawm cov saw.Kuj, peb muaj ntau yam attachments rau cov chains.