Build a comparison grid
Record product identity, specification, quantity and unit, packaging, destination, timing, requested documentation, validity period and payment or delivery terms. Flag missing details rather than assuming that they are included.
Do not compare by photography
An attractive label or a familiar container shape does not prove availability, net quantity, composition, official approval or the grade of the final product. Those points belong in the actual offer and supporting documents.
Make the comparison repeatable
Send the same accurate inquiry brief to the companies being evaluated. Confirm clarifications in writing so the procurement team can compare like for like.