Sign up for an Award
Participate with your entry in one of our professional or student awards.
Sign up for an awardLearn more:
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
The products are mainly used in offices and other places, adsorbed on the side of the table, you can save office space.
Shandong University of Science and Technology
Qingdao City, China
Qianqian Zhang,
Shandong University of Science and Technology