| Commercial role | Usually provides a service to search, compare, verify, and coordinate for the buyer | Usually acts as the seller and resells goods sourced or arranged through its supply base | Service agreement or sales contract naming scope and responsible entity |
| Pricing visibility | May show supplier quotations plus a disclosed service fee; confirm all incentives | Commonly quotes one resale price containing its margin and service costs | Itemized scope, exclusions, fee or price basis, and treatment of rebates or commissions |
| Factory visibility | Can disclose and compare candidate factories if that is part of the engagement | May protect its source network or change factories within agreed contract limits | Manufacturer identity requirement, subcontracting rule, and change-approval clause |
| Multi-supplier coordination | Can coordinate several suppliers while contracts or payments may remain separate | Can consolidate products into one seller relationship and commercial invoice | Order map, consolidation responsibility, quality ownership, and export-document plan |
| Quality claim | Responsibility depends on the service agreement and underlying supplier contract | The trader is the contractual seller, subject to the actual sales terms | Specification, inspection plan, acceptance rule, remedy, and party responsible for rework or replacement |
| Best-fit signal | Buyer wants supplier comparison, visibility, and control but needs local execution | Buyer values one seller, mixed-product consolidation, or a simplified commercial interface | A small test assignment or order with measurable deliverables and review points |