Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
The little difference between traditional bobbin and new bobbin is adding two incision one is round card slot to prevent bobbin line scattered when the bobbin fall down to the ground.the other is square card slot to cut off the line more convenient when you are pulling gently.
East china jiao tong university
Nanchang city, China
East China jiaotong University
Jinpo Zhang Danyang Zhang Ranran Guo