1. Nws yog qhov yooj yim rau nruab thiab txav tau. Yog tias ntau yam kev sib xyaw siv tib cov khoom siv, tsuas yog ib tus pub khoom noj tuaj yeem pub ntau cov tshuaj tov rau tib lub sijhawm, tshem tawm cov teeb meem ntawm kev ua thiab ua cov khoom noj kom yooj yim dua. Muaj kev nyab xeeb dua, muaj sijhawm ntau, thiab txuag siv zog tsawg.
2. Tsim nyog tsim, tsim kev lag luam yooj yim thiab txij nkawm. Piv nrog lub tshuab nqus tsev nqus, nws tuaj yeem zam qhov teeb meem ntawm kev ntxuav lub taub lim nquag.
3. Txais cov tseev tsim ntiaj teb hluav taws xob tswj hluav taws xob thiab cov khoom muaj npe nrov kom paub tseeb tias kev nyab xeeb thiab kev ua haujlwm ntawm lub system, lub peev xwm conveying yog tib neeg, thiab qhov siab tshaj plaws thauj khoom ib teev yog 3 tons.
4. Lub tshuab no muaj ntau hom kev siv, suav nrog cov hmoov, cov yas sib xyaw, cov hmoov nplej sib xyaw, cov tshuab ua hmoov nplej, thiab cov hmoov nplej-sib xyaw hauv cov khoom siv tshuaj thiab cov txheej txheem tshuaj.
5. Kev siv hluav taws xob tsawg, tsuas yog li ib feem peb piv nrog cov tsoos nqus nqus plua plav thiab lub caij nplooj hlav plua plav.
