Split from style, mugs and office mugs (with handle);
From the material, the cup body tube has ordinary glass tube and crystal glass tube;
In terms of production technology, there are two layers with tail and two layers without tail. The tailless glass is flat and has no margin.
From the top of the cup, there is a standard cup, high glass (the filter is deeper, more reasonable design, drinking water will not touch the filter)
Distinguish from the bottom of the cup, ordinary thin bottom, thick round bottom, thick straight bottom, crystal bottom.