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Case Study: Torsion Bar Supply for an e-commerce seller in Southeast Asia

Source:Case / Time:2026-09-18

Torsion Bar for An e-commerce seller in Southeast Asia

An e-commerce seller came to us with a torsion bar 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

  • A specification nobody had written down
  • Documentation that arrived after the container shipped
  • A fitment that looked right on paper and failed on the bench

Torsion Bar case study

What was specified

PartTorsion Bar
ClientAn e-commerce seller
MarketSoutheast Asia
Volume5,000 pieces across 3 specifications
Base materialTempered Glass
Sampling rounds3
Delivery window6 weeks from PO to ex-factory
ComplianceREACH

How it was resolved

  1. The specification was rebuilt around Tempered Glass 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.

Torsion Bar production run

Result

  • 5,000 pieces delivered inside the 6-week window.
  • Unit cost held within 2.0% 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

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.

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