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2024-09-10
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2024-09-10
???????? ????????? ??????? ?? ?????????? ???? ???????????? ????? ?????????? GB27898.2-2011 ?? GB50974-2014 ?? ?????? Quanyi Pump ?????? ???????????.???? ?? ???????????? ????????: ???????? ?? ????????? ??? ?? ????????? ???? ????? ??? ??????? ?? ???????? ?? ??? ????? ?? ???????? ?????? ????, ??????? ?? ?????? ???????? ????? ?? ??? ?? ??????? ????????? ??? ?? ???, ??????? ?? ??????? ??????????? ???? ?????? ?????? ???????????? ??????? ?? ????? ???? ???? ????. ??????, ???? ????? ????? ???????? ????? ??????????? ??? ???.
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01

QYK-2XF-200YJ star-delta step-down one-use and one backup plus ?????????? ????? ???? ??????????
2024-09-10
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