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The most suitable temperature for the milk which babies drink is 30 degrees - 40 degrees.
This sticker can help parents more convenient to distinguish the temperature of milk.
Different regions become darker in color when this stricker feels different interval of the temperature.
ChongQing University
ChongQing, China
ChongQing University
ChongQing, China
Jiayin Dai
yixi Hu
junyan Sun
xiao Li