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The “concave&convex”design of the body part,saves a lot of space,which also can prevents the bottle from tumbling while it is knocked over.It is safe and convenient to drink with friends together with the same bottle.
Hubei university of technology
WUHAN-HUBEI, China
Yijuan Shang,
Hubei university of technology
Shihui Liao,
Hubei university of technology
Xueyuan Pei,
Hubei university of technology
Yulei Qiu,
Hubei university of technology