Cov ntawv txiav yog cov cuab yeej siv rau cov neeg nyiam siv tes ua, feem ntau yog ua los ntawm PVC lossis roj hmab nrog daim phiaj- zoo li nto, feem ntau yog siv los tiv thaiv cov duab los ntawm riam khawb. Lawv cov yam ntxwv tseem ceeb muaj xws li:
1. Kev sib txhuam siab: Cov ntxhib saum npoo zoo nkauj yog tsim los tuav cov ntawv lossis cov khoom siv rau hauv qhov chaw, tab sis tuaj yeem cuam tshuam qhov smoothness ntawm nas txav.
2. Cov Thickness Nruab Nrab: Feem ntau 3-5 hli (xa mus rau cov khoom lag luam tshwj xeeb), muab qee qhov cushioning, tab sis cov npoo yuav warp.
3. Siab Durability: Zoo heev txiav tsis kam, tab sis ntev - kev sib txhuam yuav ua rau nto hnav, cuam tshuam rau nas raug.