Yuyao Bill Spray Co.,Ltd
Yuyao Bill Spray Co.,Ltd Good service High quality and Low price is our mission
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The key is a unique two-chamber system with a piston:
The Dispenser Pump: This is the top part you press down on. It creates the pressure to push the product out.
The Product Chamber: This is where your cream or serum sits, located above the piston.
The Piston/Diaphragm: This is a tight-fitting disc at the bottom of the product chamber. It creates a seal.
The Bottom Platform: This is the part you see at the very bottom of the bottle. It moves upward as the product is used.
The Mechanism in Action:
When you press the pump, product is forced out through the nozzle.
This creates a vacuum in the product chamber.
To equalize the pressure, the bottom platform moves upward, pushing the piston with it.
This piston pushes the remaining product toward the pump, ensuring no empty space (and therefore no air) is left inside.
The result: 100% of the product is dispensed, and air never touches the contents.
