The company now has six high-frequency straight seam welded pipe units, three hot-dip galvanizing line.

公司现拥有六条高频直缝焊管机组，三条热镀锌生产线。

youdao

The company now has six high-frequency straight seam welded pipe units, three hot-dip galvanizing line.

公司现拥有六条高频直缝焊管机组，三条热镀锌生产线。

youdao