ZJ Pack 20-410 PP Flat Top Serum & Treatment Pump, 0.23cc Dosage with External Spring & Domed Clear Overcap

What this packaging is

An external spring design — where the spring sits completely outside the pump body and never contacts the formula inside — is the standout feature of this 20-410 PP Flat Top Serum & Treatment Pump. Built for precision dispensing at 0.23cc per stroke, it's engineered for leave-on formulas like face serums, foundations, primers, eye creams, and BB creams where dose control and contamination prevention matter. The flat-top collar with a domed clear overcap keeps things polished out of the box, and compatibility with standard 20-410 neck threads means it integrates easily across most bottle programs. Decoration options including electroplating, spray coating, and water transfer printing give brands real room to customize.

Why brands choose this

• Formula-safe external spring design: The spring sits entirely outside the pump mechanism and never touches the product inside — a meaningful spec for high-active serums, eye creams, and treatments where metal contact or contamination risk could affect formula integrity or brand trust.
• 0.23cc dose control built for treatment-category norms: At 0.23cc per stroke, this pump delivers the controlled, measured dispensing consumers expect from serums and treatment products — reducing waste, reinforcing the premium feel of the ritual, and preventing over-application that can frustrate users of concentrated actives.
• Decoration flexibility supports brand customization across formats: Electroplating, spray coating, and water transfer printing options mean this pump can be finished to match a brand's visual identity — from sleek minimalist to full-color — across foundation, primer, BB cream, and serum lines without switching components.

Decoration