Sub patrocinio Ferri Pipe germen Sinarum Ferri Structurae Association（CSPA） et ab Tianjin Youfa Steel Pipe Societas, 2021 Ferro Pipe Export Symposium feliciter celebratum est in Tianjin die 16 mensis Iulii.
Post conventum, repraesentativa fistulae ferri 2021 symposium exportationis visit Tianjin Youfa Steel Pipe Group die 17 mensis Iulii.
Post tempus: Iul-17-2021