Schmidt tableware thermos cup has been strictly tested, and the heat preservation and cold preservation time is as long as 12 hours. The test shows that when the room temperature is 20℃, 100℃ boiling water is injected, and the water temperature is still 72℃ for 6 hours. When the room temperature is 20℃, the temperature can reach 5℃ by injecting 0℃ ice water for 6 hours. Schmidt has a cup in his hand. From sunset to sunrise, he has his warm company for 24 hours.