On January 28, a related research result of "water-jet printing" by the research team of Professor Zhang Xiaoan of the School of Chemistry of Jilin University was published in the "Nature News", a newsletter of the British "Nature". The technical core of "water jet inkless printing" lies in printing paper. It is to load the hydrochromic dye on the paper base. When the paper meets water, it will show color. When the water evaporates to dryness, the paper will return to the colorless state, so as to achieve repeated use. This not only solves the problems of ink cartridge clogging and expensive replacement of ink cartridges faced by inkjet printing consumers, but also reduces environmental pollution and waste of resources. Zhang Xiaoan said: "We can look forward to using this kind of paper to print a day's newspaper or magazine, and the next day the paper can be printed again." Luggage Wheel,Detachable Luggage Wheels,Suitcase Repair Wheel,Trolley Spare Wheels GUANGDONG SUNDES LUGGAGE ACCESSORY TECHNOLOGIES CO.,LTD , https://www.sundes-global.com