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You mustn't open / You mustn't open

You mustn't open
You mustn't open

Very often encounter when we open a cola bottle Coke spilled out, because cola carbonated drinks, so I use the bump prompt to remind people can open. When the inside air pressure high when the recessed slot will drum up, just block the opening, to remind people can not open, you need to later on Pressure reducing convex becomes groove before they can open. Not only gives intuitive hints, but also easy to open.

University

Jiangxi University of Finance

Jiangxi University of Finance
NanChang, China

Design

Jiangxi University of Finance

Jiangxi University of Finance
NanChang, China

YuGeng Yu /Yun Yang / Kang Gu/Jie Lv