Double deck glass raw material is of high borosilicate glass, food grade, food grade glass, after high temperature 600 degree firing, is usually made of high borosilicate glass tube, and tube size after technicians in the sealing machine and baked, is a new type of green tea, more and more people of all ages.
From the style, mugs and office Cup (with a handle);
From the material on, a cup body pipe with ordinary glass tube and the crystal glass tube;
From the production process on the points, with double tail and double no tail, tail double-layer glass with a droplet sample at the bottom of the cup; tailless glass is flat, no points.
Distinguish from the mouth of the cup, a standard cup, high export glass (screen deeper, more reasonable design, water will not touch the screen)
Distinguished from the cup bottom, ordinary thin bottom, thick round bottom, thick straight bottom, crystal.