QQ

Qingwen Qiao

Overall (2018): #272,286 of 503,207Top 55%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9982212 Metal detergent and preparation method thereof and lubricant oil containing metal detergent Jinfeng Fan, Xinshui Wan, Liqiang Zhou, Shiping Wang 2018-05-29