Medical inflatable ring cushion's air valve

Regarding the quality of the air valve. First of all, the valve material is copper, and the white one is chrome-plated. One of the processes in the chrome plating process is pickling. After pickling, the surface of the valve will become very smooth, while the copper valve without chrome plating retains the roughness of the surface. It is this roughness that makes the copper valve and the rubber With more friction and stronger and more reliable after bonding, this valve has almost no quality problems.

The body of the valve that can be inflated with an air pump is a little thin, and it may break during use.