Crystal glass, glass office glass, glass mouth glass, tailed glass, tailless glass. A cup with a tail is not as hot as a vacuum cup. Tailless cups are vacuum cups that hold for a long time. Due to the similarities and differences in glass materials, the pattern process mainly includes screen printing and flower paper baking. Screen printing is a single color, simple pattern, and the method of using a plate to brush the ink. Flower paper can be a variety of colors, usually can not have gradient colors, that is, standard red, yellow and blue.