??????????HDPE????????????,???????,PVC?????,HDPE?????,???????????????????????

    HDPE????????????:

    1.??????????????,????????ò???????????.?????????????,????????????.

    2.???????,????????????;???????,??????????????в??????.??????????????????????1/3??1/2.??????????,?????????.

    3.????????,??????????????,????????????,????????.

    ?????????????????????????,???ù???(200g / m2)????.

    4.?????????,??????1?????????????????????,?????????????λ?????.

    5.???????,????????????????????,???????????κ???????.

    6.??????????????????н???,??????5?????????????.

    7.???????:?????????????ò???????????????.

???????

???????PVC??????÷?Χ

?????????????????????е?????