Case Study: Power Window Motor Supply for a rental company in Central America
Source:Case /
Time:2026-09-18
Power Window Motor for A rental company in Central America
A rental company came to us with a power window motor programme for Central America. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.
The starting point
- Packing that arrived crushed at the port
- A specification nobody had written down
- Reorders that did not match the approved sample
What was specified
| Part | Power Window Motor |
|---|---|
| Client | A rental company |
| Market | Central America |
| Volume | 20,000 pieces across 3 specifications |
| Base material | Stainless Steel |
| Sampling rounds | 3 |
| Delivery window | 8 weeks from PO to ex-factory |
| Compliance | ECE R90 |
How it was resolved
- The specification was rebuilt around Stainless Steel and the tolerance locked before bulk.
- A pre-production sample was approved and kept as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.
- Documentation shipped with the goods instead of after them.
Result
- 20,000 pieces delivered inside the 8-week window.
- Unit cost held within 1.5% of the original quotation.
- Inspection-related rejection stayed under 1.0%.
- The specification is on file, so reorders reproduce the approved sample.
What we would repeat
Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.
Planning something similar?
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
