Kev tawg pov thawj threading lub thawv yog siv los thaiv kom ruaj ntseg thiab tiv thaiv kev sib txuas hluav taws xob hauv thaj chaw muaj kev phom sij, xyuas kom meej tias tej nplaim taws lossis nplaim taws tsis ignite ib puag ncig cov khoom tawg.