CD

Cailiang Dong

BC Beifa Group Co.: 3 patents #33 of 57Top 60%
Overall (All Time): #1,505,928 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9321296 Flat-pen automatic assembly line Feng Zhu 2016-04-26
9221560 Vibrating device for uniform filling of granular ornaments Feng Zhu 2015-12-29
8917297 Pen-barrel heat transferring device Xianghong Wang 2014-12-23