?? ???? ???????? ??????????? ? ?????? ???????? ???????? ??? ??? B ??? ??? ???? ????? ??? ???? ???? ? ??? ?????? ?? ????? ????? ?????? ???? ???? "B" ?? ???????. ????? ????? B ?? ???????? ???????? ??? ?????? ??????? ??? ??? B ???????? ?????? ????? ????? ???????? ???????.

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

?????? ?????? ????? ??? ??? ?????? ??????? A ? ??? ?????? ??? ????? ??????? ??? ??? B ???? ?????? ???????. ??? ????? ??????? ????? ? ????? ?????? ??????? ??? ??? B ?????? ?? ?????? ??????? ? ???? ????? ????? ??????? ????? ?????? ? ???? ?? ?????? ?????? HDPE ??????? ???? ??????? ??????? ?????? ?? PP ???? ?????? ??? ???? ?????? ??? ?????? ??? ???? ????? ????? ?????? ?????? ???? ????? ????? ?? ????? ?????. ???? ??? ??????? ??? ????? ????? ???? ??????? ???? ???? ? ??? ????? ?? ???? ??? ????? ???? ????? ??? ?? ???????? ??? ???? ?????? ?????? ?? ??????? ??????? ????????. ????? ?????? ??????? ?????? ??????? ??? ??? ??? A ??????? ??? ????? ?????? ?? ??? ??????. ???????? ??? ??? ? ???? ?????? ??? ?????? ??????? ??? ??? ??? B ????? ????? ???????? ??? ??????? ??????? ? ?????? ??????? ??????? ??? ????? ? ?????? ????? ???????.

?? ??? ?????? ?? ????? ?????? ?? ?????? ??????? ??? ??? ??? B ? ???? Hubei AD Building Materials Co. ? Ltd. ????? ?????? ?????? ?????????? ????? ??????. ?????? ???? ????? ??????? ????? ??????? ????? ????? ?????? Hubei ??????? ? ???? ?????? ?????? AD PE ??????? ???? ???? ?????? ??????? ???? ? ???? ?????? ???? ???? ???? ?? ?????? ?????? ????? ??? ????? ???????. ?? ????? ?? ?????? ??????? ??? ??? ????? B ???? ????? ??? ??? ???? ?????? ?????? ????? ??????? ?????? ? ???? ????? ????? ????? ????????? ????? ?????????? ???????? ???????? ? ??? ???? ???? ???? ?????? ?????? ????? ?????? ? ??????? ?????? ?????? ?? ????????.