Thaum lub Cuaj Hlis 20, 2023, Liu Kaisong, Tus Thawj Coj General ntawm Yuantai Derun Steel Pipe Group, tau tuaj koom lub rooj sib tham 2023 World Manufacturing Conference Pab pawg muaj 103 dub high-frequency welded steel yeeb nkab khoom kab, nrog rau txhua xyoo muaj peev xwm txog li 10 lab.. .
Nyeem ntxiv