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Case Study: Oxygen Sensor Unit Supply for a construction contractor in Europe

Source:Case / Time:2026-09-18

Oxygen Sensor Unit for A construction contractor in Europe

A construction contractor came to us with a oxygen sensor unit programme for Europe. 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

  • Reorders that did not match the approved sample
  • A specification nobody had written down
  • Packing that arrived crushed at the port

Oxygen Sensor Unit case study

What was specified

PartOxygen Sensor Unit
ClientA construction contractor
MarketEurope
Volume20,000 pieces across 2 specifications
Base materialCast Iron
Sampling rounds2
Delivery window6 weeks from PO to ex-factory
ComplianceSGS

How it was resolved

  1. The specification was rebuilt around Cast Iron 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

  • 20,000 pieces delivered inside the 6-week window.
  • Unit cost held within 4.5% of the original quotation.
  • Inspection-related rejection stayed under 2.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Fix the specification count early. Adding variants after production starts is the most expensive change a client can request.

Planning something similar?

Share a sample or a drawing and we will quote against a written specification, not against a photograph.

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