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Case Study: Relay Supply for a bus operator in North Africa

Source:Case / Time:2026-09-18

Relay for A bus operator in North Africa

A bus operator came to us with a relay programme for North Africa. 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

  • Premature wear on the first batch
  • Reorders that did not match the approved sample
  • A supplier who changed material without saying so

Relay case study

What was specified

PartRelay
ClientA bus operator
MarketNorth Africa
Volume10,000 pieces across 3 specifications
Base materialHigh Density Foam
Sampling rounds2
Delivery window4 weeks from PO to ex-factory
ComplianceRoHS

How it was resolved

  1. The specification was rebuilt around High Density Foam and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Relay production run

Result

  • 10,000 pieces delivered inside the 4-week window.
  • Unit cost held within 4.5% 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?

Send the specification you are working to and we will confirm what we can match, what we would change and why.

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