Tomalin energy cup. The tourmaline energy cup, also called "tourmaline health cup" and "nano energy cup", is a new type of health-care water cup, which was very popular in that year and deeply loved by consumers. There is a functional area at the bottom of the cup, and the functional materials are composed of dozens of natural materials, such as tourmaline, activated carbon, volcanic rock, germanate, active silicon oxide, active titanium oxide and so on. Now it is extracted by nanotechnology. Natural substances in the cup can change ordinary drinking water poured into the cup into "small molecular group" weakly alkaline water within 15 minutes, and the water quality, calorific value and activity have all changed, so some people call it weakly alkaline water cup.