Disponsoran ku Cabang Steel Pipe of China Steel Structure Association (CSPA) sareng diayakeun ku Tianjin Youfa Steel Pipe Group, 2021 Steel Pipe Export Symposium junun diayakeun di Tianjin dina 16 Juli.
Saatos rapat, wawakil simposium ékspor pipa baja 2021 nganjang ka Tianjin Youfa Steel Pipe Group dina 17 Juli
waktos pos: Jul-17-2021