Headlight bulb size chart for sample and replenishment planning

Supply Planning decision points

Requirement and confirmation ledger for sample batches and replenishment
Decision point	Buyer / supplier question
Sample stage	Agree the exact bulb designation from the size chart, base drawing and what will be inspected on the sample pieces.
First batch	Confirm quantity, packing unit and accepted specification revision before converting the sample into a production lot.
Repeat supply	Keep base references, agreed substitutions and reorder requirements visible so later lots stay comparable to the approved sample.
Change review	Ask for disclosure when light-source technology, electrical ratings, materials or production sources change after the first acceptance.

A size chart is a procurement input for writing RFQ lines. It is not proof that two similarly named bulbs share optical approval inside a particular headlight housing. Ask suppliers to map each quoted line to the chart designation, base drawing and rated voltage before sample pieces are approved.

For replenishment planning, separate sample quantity, first-batch quantity and steady reorder quantity. Optional budget and supplier preference can travel with the inquiry, but they do not replace designation confirmation or packing-unit alignment.

Supply Planning decision points

What to send