Ni Oṣu Karun ọjọ 26, Ọdun 2021, a ṣe Ifihan Ifihan Vacuum International 16th ni Ile-iṣẹ Apejọ ti Orilẹ-ede ni Ilu Beijing, ati pe o jẹ ajọṣepọ nipasẹ Ẹgbẹ Vacuum China ati China General Machinery ati Association Industry Equipment Vacuum Equipment. Ọgbẹni Zhang Yongming, igbakeji alaga ti China Vacuum Socie ...
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