Ua ntej tshaj plaws, cia peb saib cov laj thawj uas ua rau cov khoom siv raw hauv lub tshuab ziab khaub ncaws kom ntes hluav taws:
TSIS MUAJ 1. Cov cuab yeej siv tshuab ziab khaub ncaws siv tsis raug thiab cov txheej txheem tsis raug;
TSIS MUAJ 2. Cov cuab yeej siv tshuab ziab khaub ncaws me me dhau los ua kom tiav cov nyhuv ziab thiab quab yuam kom ua kom hluav taws, thiab lub tshuab ziab khaub ncaws tsis raug xaiv;
NO 3. Muaj teeb meem nrog tus qauv tsim ntawm cov khoom siv ziab, thiab muaj teeb meem hauv kev tsim;
TSIS 4. Qhov tsis muaj peev xwm nqus tau cov khoom siv raw ua rau hluav taws kub hauv lub tshuab ziab khaub ncaws thiab qhov zoo ntawm lub tshuab ziab khaub ncaws nws tus kheej.
Qhov thib ob yog kev daws qhov hluav taws kub ntawm cov khoom siv raw hauv sawdust thiab sawdust tshuab ziab khaub ncaws:
TSIS MUAJ 1. Tshawb xyuas seb lub tshuab ziab khaub ncaws puas raug ntsia, seb nws puas los yog ua kom cua siab;
TSIS MUAJ 2. Sib tham nrog cov chaw tsim khoom kom tau txais cov khoom siv phau ntawv los kawm txog txoj kev siv kom raug;
NO 3. Yog tias nws yog qhov teeb meem zoo, cov chaw tsim khoom yuav tsum hloov lossis hloov lub tshuab ziab khaub ncaws;