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Defekti EPDM PVC
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PVC, EPDM, HDPE . (0,8-1,5) ( ). 5-8 .
.
.
HDPE 7 . , .
PVC 7-8 . . , .
EPDM 6-7 . , , . .
, .
. . PVC, EPDM
HDPE 5 . . , ( - ) 15 . .
PVC, EPDM HDPE ,
- .
,
. .