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The volume of the fridge always bothers users, because large fridge can store more food but it will occupy large space and cost too much electricity. While the small one occupies a little area and cost less electricity, but its storage space is limited. + - fridge can solve this problem by shrinking its structure to realize the goal of enlarging and shrinking. Based on the amounts of food, users can choose different volumes, which can not only save the electricity but also take up less area indoor.
South China Normal University
Guangzhou City,Guangdong Province, China
Wang Jinglong Li Hailin Cheng Yanyan