1. Build a focused bulb-size mix
Start with the socket families your market actually buys, such as H4, H7, H11, 9005 and 9006, then narrow the approved series for each route.
2. Compare evidence, not only wattage claims
Review beam evidence, thermal design, electronics and model-specific data. Headline numbers alone do not show whether a product is right for your market.
3. Plan for repeat orders
For distribution, ask how the supplier controls the approved model, packaging and quality reference across repeat orders.
4. Add commercial requirements
State estimated quantity, packaging, private-label scope, target market and sample requirements so quotations can be compared on the same basis.