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