ZJ Pack 24-400 PP Slim Serum Pump, 0.48cc Dosage with External Spring & Flush Overcap

What this packaging is

Precision-dosed at exactly 0.48cc per stroke, the 24-400 PP Slim Serum Pump is engineered to deliver consistent output across serums, face moisturizers, eye creams, cleansers, and hair treatments. Built from durable polypropylene with an external spring mechanism, the spring sits completely outside the pump body — never touching your formula — making it a smart pick for active-rich or reactive skincare formulations. The slim actuator and flush overcap keep the profile clean and shelf-ready, while a glossy collar adds a premium finish. Decoration options including electroplating, spray coating, and water transfer printing make brand differentiation easy. A reliable fit for any 24-400 neck, this pump works across a wide range of container formats.

Why brands choose this

• Formula integrity built into the mechanism: The external spring design keeps the spring completely isolated from the product chamber, reducing contamination and oxidation risk — a critical advantage for vitamin C serums, retinol treatments, and other oxidation-sensitive actives that are dominating prestige skincare launches.
• One pump fits your entire skincare range: The standard 24-400 neck finish pairs with a wide variety of bottles already in the market, so brands can roll out serums, cleansers, eye creams, and hair treatments under a single pump SKU — simplifying vendor management and accelerating product line extensions.
• Decoration-ready for real brand differentiation: Electroplating, spray coating, and water transfer printing are all supported, giving packaging and brand teams multiple pathways to customize color, finish, and texture without switching components — valuable when building cohesive collections or differentiating sub-lines within a brand.

Decoration