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????? ????? ???? ?? ???? ???????? ????? ?????? ????? ??????? ???? ????? ????, ?????? ???? ????? PVC ????. ???? ?????? ??? ???? ?????, ??? ?? ???? ??????. ???? ?????? ????? ??? ???? ?????? ?? ??????, ???? ?? ?????? ?? ???????? ????? ?? ?????? ?? ????? ??????. ?????? ?????????? ??????? ??????, ?????? ????? ?? ??? ?????? ???? ????? ?? ?????? ??????; ???? ?? ?????, ?? ?????? ?????, ??? ????; ?????? ????? ?????? ?? ?????? ????, ????? ????; ?????, ???? ????? ??????, ?????? ?????? ??????? ???, ??????? ????? ??? ??? ???? ?????. ???? ????? ???? ???? ?? ???? ???? ????????, ???? ????? ??????? ?? ????? ????????, ????? ??????, ??? ????? ????? ???? ????? ?????? ???? ???? ?? ????? ??????; ???? GOLDstone ??????? ??? ?? ???? ??????? ????? ??? ???, ????? ??? ????? ????? ???? ?????? ????? ?? ????? ????????? ?????? ??????.