PVCU ???? ??????? ?????? ??????? ?????? | DN20-DN630 ?????? ??????? ?????? | ????? ????? PN0.63-PN2.5 | ????? ?????? ?????? ??????
????? ?????:
1 ? ????? ?????: ????? ??????? ????? ?? ???? ??????? ??? ???????? ?? ???? ?????? ???????.
2 ? ??????? ?????: ????? ??? ?????? ?????? ??? ???????? ?? ???? 24 ????.
3 ? ??????? ?????: 7-15 ???? ??? ?????? ??????? ??????? (????????? ???????).
4 ? ???? ??????: ???? ????? ???? ?????
.