Cov plua plav collector cov pob tawb ntim khoom lag luam muaj cov ntaub ntawv sau tshwj xeeb tsim rau cov thawv hauv av, nws muaj cov laj thawj hauv qab no, cov qauv thiab kev siv cov xwm txheej:
1.} Kev ua tau zoo los tiv thaiv kev ua haujlwm zoo li qub thiab kev nyab xeeb ntau dua
2. Tus Qauv Tsim Qauv yog qhov tsim nyog rau cov neeg sau cov plua plav, nrog kev sib khi ua kom muaj zog thiab yooj yim
{{03. Cov khoom siv thiab lub zog yog yoog raws li cov yam ntxwv plua plav
{{04.} Kev sib xyaw ua ke, yoog raws li cov plua plav tshem tawm cov plua plav
5.} Daim ntawv thov ntau dua, kev tiv thaiv ib puag ncig thiab kev ua tau zoo
Cov ntsiab lus: Cov tub ntxhais tseem ceeb tau coj los ntawm Tshwj Xeeb
Lub thawv ntim cov hmoov av uas muaj cov teeb meem tshem tawm cov khoom lag luam kom qhuav, muaj plua plav rau cov tshuaj tua kab mob kom zoo nkauj xws li cov tshuaj lom neeg, metallurgy, thiab ib puag ncig Kev Tiv Thaiv .
