????? ???????? ???? ?? ????? ?? ???????? ???????? ?? ????? ????????? ???? ????? ??? ?????? ?????? ??????? (?? 16.5g / M3 ?18.5g / M3)? ?????? ????? ?? ?????? 50?. ????? ???????? ???? ?? ????? ????????? ????? ??? ??? ???? ???????? ????? ???? ??? .. ????????? ??????? ?? ???? ???? ??????? ???????? ??? ????? ????? ???????? ???? ?? ???????. ????? ???????? ???? ??? ?? ????? ?? ??????? ??????? ???? ?????? ????. ???????? ??? ???? ????? ???????? ???? ?? ???? ?????? ?????? ???? ?? ???? ????? ?????? ??? ??????? ?????? ?????? ????? ????? ??????? ???????. ????????? ??? ??? ???? ????? ???????? ???? ???? ?????? ?????? ??????? ???????? ??????? ?????? ???? ?????.

????? ????? ???????? ????? ?????? ?? ??????? ?????? ???:
??? ???? ???? ????? ??????? (???? 16.5 ?? / ?? 3 ~ 18.75 ?? / ?? 3)? ???? ?????? ?????? ?????? ?????? ??????? ?????? ????????? ??????? ??? ????? ????? ????? ??????? ??? ??????? ??????? ????? ??????? ???????? ????????? ??????? ?????? ?? ????? ??????? ??????? ??????? ???? ??????? ??????? ?????????? ??????? ?????? ??????????? ???????? ???? ???????? ?????? ??????? ??????? ?????? ?????? ???? ????? ??????? ?? ???????? ??????? ?????? ??????.