Lub Kaum Ib Hlis 20, 2018, lub rooj sib tham pib ntawm Shandong Hydraulic Association (Shandong Equipment Manufacturing Association Hydraulic ceg) tau ua tiav hauv Qingdao. Gao Ling, tus tuav ntaub ntawv ntawm tus koom nrog koom nrog Shandong Khoom Tsim Kho Khoom Siv Koom Tes, Su Hongxing, d ...
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