ZJ Pack 20-410 PP Serum & Treatment Pump, 0.48cc Dosage with External Spring & Premium Thick-Wall Square Overcap

What this packaging is

An external spring positioned completely outside the pump body — never touching the formula inside — sets this PP serum pump apart where product integrity matters most. The 20-410 PP Serum & Treatment Pump pairs a precise 0.48cc dosage with a 20-410 neck finish, making it broadly compatible across bottle ranges used for face serums, eye creams, moisturizers, foundations, and cleansers. The gold metallic ABS shoulder sleeve and MS outer cover add genuine shelf presence, while the premium thick-wall square overcap keeps everything hygienic between uses. Manufactured in China with Zhejiang-based production oversight, it supports electroplating, spray coating, and water transfer printing for brand-specific customization.

Why brands choose this

• Formula integrity built into the mechanism: The external spring sits fully outside the pump body, eliminating any contact with the product inside. For serums, eye creams, and active-ingredient treatments where contamination or ingredient degradation is a real concern, this is a structural safeguard — not just a design detail.
• Precision dosing that works for high-performance skincare: A calibrated 0.48cc output per stroke gives consumers consistent delivery of serums, treatments, and foundations — formats where over-dispensing wastes expensive formula and under-dispensing undermines efficacy. That dose control also reinforces the premium, clinical positioning many skincare brands are building toward.
• Decoration-ready for a premium brand aesthetic: Gold metallic finishes on both the ABS shoulder sleeve and MS outer cover give this pump a high-end visual signature straight out of the box. Add electroplating, spray coating, or water transfer printing, and brand teams have real flexibility to customize without sourcing a separate decorating vendor.

Decoration