?????? ?????????? ??? ?? ?????? ??? ?? ?????? ???????? ?? ??? ???? ?? ??? ???????????? ??? ???? ?? ????????? ??? ?? ???????? ?? ??????????????. ?? ??????, ??, ??, ??, ?????? ?? ???????? ?????? ?????? ??????????? ??????.Donaldson delivers abilities in ePTFE-bolstered composite PEM for gasoline mobile stacks ??an enhanced option to non-strengthened P