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Case Study: Turn Signal Lamp Supply for a bus operator in Southeast Asia

Source:Case / Time:2026-09-18

Turn Signal Lamp for A bus operator in Southeast Asia

A bus operator came to us with a turn signal lamp 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

  • Inconsistent hardness between lots
  • Reorders that did not match the approved sample
  • Premature wear on the first batch

Turn Signal Lamp case study

What was specified

PartTurn Signal Lamp
ClientA bus operator
MarketSoutheast Asia
Volume2,000 pieces across 2 specifications
Base materialCeramic Composite
Sampling rounds3
Delivery window8 weeks from PO to ex-factory
ComplianceSGS

How it was resolved

  1. The specification was rebuilt around Ceramic Composite 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.

Turn Signal Lamp production run

Result

  • 2,000 pieces delivered inside the 8-week window.
  • Unit cost held within 3.0% 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

Keep one accountable owner on both sides. Most delays come from hand-offs, not from machines.

Planning something similar?

Tell us the model, the fitment and the quantity and we will hold a production slot for you.

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