Blister ntim raw khoom siv PVC tseem ceeb

Cov ntaub ntawv thiab cov ntaub ntawv profiled yog thaj chaw loj tshaj plaws ntawm PVC noj hauv kuv lub tebchaws, suav txog li 25 feem pua ​​​​ntawm tag nrho cov khoom siv PVC. Lawv tsuas yog siv los ua lub qhov rooj thiab qhov rais thiab cov ntaub ntawv txuag hluav taws xob, thiab lawv cov ntawv thov ntim tseem nce ntxiv thoob plaws tebchaws. Hauv cov teb chaws tsim, kev lag luam ntawm cov qhov rooj yas thiab qhov rais kuj yog qhov siab tshaj plaws, xws li 50 feem pua ​​​​hauv Tebchaws Yelemees, 56 feem pua ​​​​hauv Fabkis, thiab 45 feem pua ​​​​hauv Tebchaws Meskas.