The inner pad is adopted with PE polystyrene foam, which conforms
to the Standard of National Sanitary; it 's alcohol resistance and
maintenance.
It's made by European advanced equipment, the cap surface can be
embossing pressed and the cap side can be embossment smoothed or
360¢Xdiverse color printed, to make the surface more clear and
elegant, and the product more valuable.
The cap guards against stealing and mischief to maintain the
sealing.