Custom Zipper — Polypropylene (PP) with Anti-Rust Treatment
We supply zipper to garment factories and brands, built in Polypropylene (PP) with anti-rust treatment for childrenswear and schoolwear. On a trim like this the specification that decides the outcome is tape shrinkage matched to the garment fabric, so that is agreed in writing before bulk — not discovered when the first carton is opened on the line. Programmes start at 500 pieces per style per finish.
The failures here are predictable: unclear responsibility when a defect shows up after washing, or colour drift between the approved sample and the bulk trim. We lock material, finish, dimension and tolerance before bulk, and prepare GB 18401 safety classification with GB/T 29862 fibre labelling so the shipment clears instead of sitting at port while your selling season passes.

Specification
| Product | Zipper |
|---|---|
| Gauge | #8 |
| Type | closed-end zipper |
| Base material | Polypropylene (PP) |
| Finish / process | Anti-Rust Treatment |
| Colour options | 8 Pantone-matched shades |
| Packing | packed to your size ratio |
| MOQ | 500 pieces per style per finish |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-50 days after approval |
| Compliance | GB 18401 safety classification with GB/T 29862 fibre labelling; azo dye-free declaration |
| Ship to | Shanghai or Shenzhen (Mainland China) |
What buyers can customise
- Piece Dyeing — available on Polypropylene (PP), quoted per position and per colour.
- Paint Spray — available on Polypropylene (PP), quoted per position and per colour.
- Rubber Coating — available on Polypropylene (PP), quoted per position and per colour.
- Heat Transfer Printing — available on Polypropylene (PP), quoted per position and per colour.
- Overlocked Edge — available on Polypropylene (PP), quoted per position and per colour.
- Knitted Structure — available on Polypropylene (PP), quoted per position and per colour.
- Soft Enamel Fill — available on Polypropylene (PP), quoted per position and per colour.

How we produce it
- Drawing or reference sample review, with size and finish confirmed
- Material selection and a finish sample or strike-off
- Prototype made to the agreed gauge
- Fit and wash test on the actual garment fabric, then a pre-production sample
- Bulk run with anti-rust treatment applied under controlled settings
- In-line inspection, final AQL 2.5 inspection and packing to your ratio
Where it is used
- Denim and workwear — hard-wearing finishes that survive industrial washing
- Outerwear and tailoring — matched to the shell fabric so it drapes with the garment
- Childrenswear and schoolwear — tested to the destination's safety standard
- Bridal and eveningwear — small runs with hand-finished detail
- Uniform and corporate programmes — repeatable spec held on file for reorders

Packing, testing and delivery
Trims are packed to the ratio you specify — by size, by colour or by garment set — with barcodes applied where the line needs them. Test reports for azo dye-free declaration are prepared for the destination market. We ship to Shanghai or Shenzhen with the commercial invoice, packing list and certificate of origin, and hold the approved reference so reorders reproduce the same material, the same finish and the same tape shrinkage matched to the garment fabric.
FAQ
Can you match a reference sample?
Yes. Send the trim and we match material, finish and shade, then confirm on a pre-production sample before bulk.
What is the minimum order?
Programmes start at 500 pieces per style per finish. Mixed sizes are fine within one style.
What packing options are available?
Bulk packed, carded, or packed to your own size and design ratio with barcodes applied.
Do you ship to our forwarder?
Yes. We deliver to your nominated forwarder or quote landed cost under the agreed Incoterm.
Start your zipper programme
Send us a reference sample, a drawing or a spec sheet and we will come back with material options, a costing and a sampling timetable.