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elves using ptfe material, high strength, wear resistance, the use of the elves is very simple, gently hold the button for 2 seconds, products, and then hold down the spraying, the spray button need to record product on the surface of spray adhesive products began to record information, products according to your demand to arrange your travel plans, you forgot to bring an object more than 3 meters, alarm, elves is spray layer surface emit bright red light, the elves also can monitor the weather, according to the schedule you list your travel plan and special occasion dress.
South China university of technology