CD

Changfu Dong

BC Baoshan Iron & Steel Co.: 1 patents #8 of 55Top 15%
Overall (2018): #462,446 of 503,207Top 95%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9988857 Method for manufacturing superior 13Cr friction-welded drillrod Peng Zhao, Jie Yu 2018-06-05