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The distance of the old slots between the sockets was too short，resulting in over-occupation of large chargers.
Use the principle of splice graphic to make some changes in outlook.The switch design is changed into the button design，facilitating the power-on-and-off action without bending.The three different colors，red，yellow，and green，in the power buttons are indicators to alert the users to the limit of the extension cord wattage.
Wei-Ning,Wang Hsin-Yu,Taso Dao-Shen,Huang