Soflay^TM  yog ua los ntawm polyurethane rov ua dua tshiab. PU ua npuas ncauj ntaub pua plag hauv qab yog tshwj xeeb zoo ntawm rwb thaiv tsev thiab cuam tshuam lub suab txo nrog rau xis nyob thiab ruaj khov. Qhov no ua rau nws yog cov khoom siv zoo rau cov ntaub pua plag hauv qab. Pu underlay kuj yog qhov hnyav, yog li nws yooj yim nqa thiab haum.

Pu ua npuas ncauj underlay ntau yam muaj npe nrov rau kev nplij siab. Thawj zaug tso tawm hauv xyoo 2010, cov ntaub pua plag hauv qab tau txij li tau loj hlob los ua cov neeg siv khoom lag luam nyiam tshaj plaws hauv Suav teb. Soflay suav ntau yog muaj nyob hauv PU ua npuas ncauj thiab polyurethane rau ntau yam sib txawv ntawm cov plag tsev tshwj xeeb tshaj yog rau cov tsev so hnub qub thiab thaj chaw villa zoo nkauj, tshwj xeeb tshaj yog 10mm pu underlay thiab 12mm pu foan underay. Nws yog daim ntawv siv ntau tshaj plaws hauv ncoo siv hauv cov ntaub pua plag hauv cov chaw nyob, kuj nws yog hom ntaub pua plag feem ntau thiab ntaub pua plag hauv qab siv hauv cov ntawv thov nyob.