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Women and children may get in trouble when opening Coke bottle caps. This design is a new upgrade, which is to increase the grip strength of Coke caps, resulting in‘So easy’unscrewing.
Southwest Jiaotong University
School of Arts and Communication
Chengdu, China
Southwest Jiaotong University
School of Arts and Communication
Chengdu, China
Wang Zhaofeng; Wang Chunqi; Jiang Wenling; Ma Chunming