Welcome to Auto, Motorcycle Parts & Accessories official website!

Case Study: Turn Signal Lamp Supply for an online marketplace seller in Europe

Source:Case / Time:2026-09-18

Turn Signal Lamp for An online marketplace seller in Europe

An online marketplace seller came to us with a turn signal lamp 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

  • A supplier who changed material without saying so
  • Warranty claims traced back to a single lot
  • Lead time that slipped twice before bulk started

Turn Signal Lamp case study

What was specified

PartTurn Signal Lamp
ClientAn online marketplace seller
MarketEurope
Volume5,000 pieces across 2 specifications
Base materialStainless Steel
Sampling rounds3
Delivery window5 weeks from PO to ex-factory
ComplianceRoHS

How it was resolved

  1. The specification was rebuilt around Stainless Steel 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

  • 5,000 pieces delivered inside the 5-week window.
  • Unit cost held within 4.5% of the original quotation.
  • Inspection-related rejection stayed under 1.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Approve a pre-production sample made from the actual bulk material. Substitute material behaves differently in service.

Planning something similar?

Ask for the current catalogue and the specification sheet for this line.

Online customer service
WeChat contact
Customer service
Scan code to add Wechat (same mobile phone number)
Telephone consultation
Back to top