Òtù Njikọ Ọkpụkpọ Steel Pipe nke China (CSPA) kwadoro ya, Tianjin Youfa Steel Pipe Group kwadoro ya. E mere nzukọ 2021 nke Steel Pipe Export Symposium nke afọ 2021 na Tianjin nke ọma na Julaị 16.
Mgbe ha zukọrọ, ndị nnọchiteanya nke ogbako mbupụ paịpụ ígwè nke afọ 2021 ga-aga Tianjin Youfa Steel Pipe Group na ụbọchị 17 nke ọnwa Julaị.
Oge ozi: Julaị-17-2021