E tšehelitsoe ke Lekala la Steel Pipe la China Steel Structure Association (CSPA) mme e tsamaisoa ke Tianjin Youfa Steel Pipe Group, 2021 Steel Pipe Export Symposium e ile ea tšoaroa ka katleho Tianjin ka la 16 Phupu.
Kamora kopano, baemeli ba simposiamo ea thomello ea lipeipi tsa tšepe ea 2021 ba etela sehlopha sa Tianjin Youfa Steel Pipe Group ka la 17 Phupu.
Nako ea poso: Jul-17-2021