Material of spring ：304S
Locking mode：Left-Right Lock
Product Details：Outside spring foam pump, foam effect is exquisite, less water, good molding effect. No contact with liquid, no pollution, a wide selection of liquid ingredients. No glass ball, PE valve instead of glass ball.
*Spring can’t contact liquid. No worry about soring rusted.
*Liquids of various ingredients can be used.
*The glass ball was replaced by PE plastic to reduce the cost of recovery.