Phototherapy seal layer, bottom glue and QQ armour glue seal layer, bottom glue is different?
The second problem of the theory is the same but the specific QQ you say (actually just a brand called QQ) is a simple Bobbi body phototherapy is said to Bobbi, a focus on it is removable and simple so a general Bobbi in the market to sell packages are removable plastic bottom and two kinds of disposable seal glue is enough
Among the first problem you painted which refers to the middle of I am not very clear three is transparent because the seal is applied when there is deviation in grinding arc thickness so smeared seal can also maintain the brightness without seal coating is also theoretically possible but will become matte.
The adhesive is adhesive after polishing the first painted it then is painted nail polish glue or glue are used to color nail polish glue is like nail polish thin thin color glue is silk silk with a small brush box and then the gel is transparent at last is the seal