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 traditional umbrella can just offer users a relatively small area in vertical space because of its symmetrical structure, even when in the use, part of the body may be exposed in the rain.
Based on this problem,this kind of umbrella’s shafts are adjust to improve their utilization rate.
HANGZHOU VOCATIONAL&TECHNICAL COLLEGE
Jiashu Wu Zhuowen Huang Yangqing Li