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Case Study: Trailing Arm Supply for an online marketplace seller in Southeast Asia

Source:Case / Time:2026-09-18

Trailing Arm for An online marketplace seller in Southeast Asia

An online marketplace seller came to us with a trailing arm programme for Southeast Asia. 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
  • A specification nobody had written down
  • Documentation that arrived after the container shipped

Trailing Arm case study

What was specified

PartTrailing Arm
ClientAn online marketplace seller
MarketSoutheast Asia
Volume20,000 pieces across 2 specifications
Base materialSemi-Metallic Compound
Sampling rounds2
Delivery window8 weeks from PO to ex-factory
ComplianceIATF 16949

How it was resolved

  1. The specification was rebuilt around Semi-Metallic Compound 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.

Trailing Arm production run

Result

  • 20,000 pieces delivered inside the 8-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 part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.

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