Nearness alone does not make a supplier a good fit. A US plastics manufacturer evaluating a Mexican pigment supplier still needs evidence that the product, process, communication, documentation, and logistics match the application.
Start with the part, not the catalog
Share the polymer, process, wall thickness, current color standard, expected exposure, and any end-use requirement that has actually been documented. This information is more useful than asking for a generic “equivalent” pigment.
Review compatibility and processing scope
Ask which resins and temperature ranges are documented for the grade. Clarify whether the recommendation applies to injection molding, extrusion, blow molding, rotational molding, or only a subset of those processes.
Define how color will be approved
Both teams should know which master sample is authoritative, which resin will be used, how the part will be viewed, and whether instrumental measurements or a visual standard control acceptance.
Ask for traceable technical communication
A useful record identifies the product code, lot, sample, trial conditions, and agreed action. It should also make clear when a claim requires a technical sheet, a regulatory document, or a test on the finished part.
Separate logistics from trade assumptions
Confirm packaging, order channel, shipment terms, lead-time expectations, and import responsibilities for the specific transaction. Do not assume that location alone determines tariff treatment or USMCA eligibility.
Run a production-representative trial
Use the intended resin and process, record the dosing and machine settings, and compare the result against agreed criteria. A controlled trial reveals more than a long list of unsupported performance claims.
