???????? ?????? ??????? ????? ????????? ??????? ????????? ?????????? ???? ????. ????????? ??? ????????? ??? ?????? ??????????. ???? ????? ????????? ?????? . ????? ??????????? ??????????? PVC ?????? ??????? ??????? ?????, ???? ??????????? ????? ??????? ??????? ??????????? ????? ????????? PVC ?????? ???? ??? ??????????? ?????? ??????? ??? ????.