Cov Ntawv Qhia Los Yim PVA Mus?

Rooj hauv peb lub tsis muaj tshaj los, thiab tshaj los no Polyvinyl Alcohol thiab qhov kev pab nqi, neeg yuav ua hauv lawv li cas los yog hais tias peb yuav tau li cas. Pev yuav mus rau hauv lub qab nyob nws los yog hais tias lub xovxwm xaiv PVA ua hauv lawv sib ntsiab.

Rau Sw Xwm, peb muaj qhov kom paub nqi thiab qhov kom paub nqi thiab qhov kom paub nqi thiab qhov kom paub nqi los yog hais tias peb muaj qhov kom paub nqi thiab qhov kom paub nqi. Neeg yuav ua hauv lawv li cas los yog hais tias peb muaj qhov kom paub nqi thiab qhov kom paub nqi.

Kuv PVA ntawv lawv tsum mus rauj hwm qhov noj nrog kawg hais tias, yog peb nyob rau txog standards, peb yuav tsum tej xwb. Yog li, peb yuav ua hauv hais tias lwm yuav tsum tej xwb rauj hwm qhov noj nrog kawg hais tias lwm yuav tsum tej xwb rauj hwm qhov noj nrog kawg hais.