Kev txheeb xyuas yav tom ntej qhia tau hais tias cov khoom siv PVC hauv tsev yuav raug txo vim qhov tsis txaus ntawm cov khoom siv raw thiab kho dua tshiab.Nyob rau tib lub sijhawm, cov khoom lag luam kev sib raug zoo tseem tsawg.Qhov kev thov qis qis yog qhov tseem ceeb rau kev ntxiv, tab sis tag nrho kev lag luam noj tsis muaj zog.Kev ua lag luam yav tom ntej tau hloov pauv ntau, thiab qhov cuam tshuam ntawm lub khw muag khoom ib txwm muaj.Qhov kev cia siab tag nrho yog tias kev lag luam hauv tsev PVC yuav hloov pauv ntawm qib siab.
