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Case Study: Oxygen Sensor Unit Supply for an online marketplace seller in Southern Africa

Source:Case / Time:2026-09-18

Oxygen Sensor Unit for An online marketplace seller in Southern Africa

An online marketplace seller came to us with a oxygen sensor unit programme for Southern 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

  • Warranty claims traced back to a single lot
  • Documentation that arrived after the container shipped
  • Reorders that did not match the approved sample

Oxygen Sensor Unit case study

What was specified

PartOxygen Sensor Unit
ClientAn online marketplace seller
MarketSouthern Africa
Volume2,000 pieces across 6 specifications
Base materialForged Aluminium
Sampling rounds2
Delivery window5 weeks from PO to ex-factory
ComplianceCCC

How it was resolved

  1. The specification was rebuilt around Forged Aluminium 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.

Oxygen Sensor Unit production run

Result

  • 2,000 pieces delivered inside the 5-week window.
  • Unit cost held within 4.5% of the original quotation.
  • Inspection-related rejection stayed under 0.5%.
  • 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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