How to audit a tennis jewellery manufacturer before ordering?

Do not rely only on a stated monthly output. Ask for a factory address, production photographs or video, a description of the relevant workshop processes, staffing information, and examples of comparable orders. The evidence should relate to the actual product category, because a factory may have substantial general jewelry capacity but limited experience with continuous-link tennis construction. Request a production schedule showing sampling, material preparation, setting, polishing, inspection, and packing stages. Buyers should also ask how capacity is allocated during peak periods and whether any process is outsourced. A site call or third-party inspection can help compare the declared capability with observable equipment, work-in-progress, and quality-control activity. Capacity is meaningful only when linked to the required quantity, specification, and delivery window.

A serious pre-sampling review should request a formal quotation, product specification sheet, material declaration, plating or vermeil description, stone specification, packaging assumptions, and sample terms. Where compliance is important, ask what RoHS or REACH-related documentation is available for the proposed materials and whether testing applies to the finished product, components, or raw materials. The buyer should also receive a drawing or tech pack that identifies dimensions, tolerances, clasp construction, stone sizes, surface finish, and branding locations. Documents should use consistent terminology and revision dates. A supplier that cannot distinguish confirmed specifications from estimates creates avoidable disputes during approval and bulk production.

Plating should be specified by base metal, surface preparation, finish, and an agreed thickness or performance requirement where applicable. Buyers should ask how thickness is measured, which areas are tested, and whether the result is recorded on representative samples rather than inferred from appearance. Visual brightness is not proof of durability. For stones, inspect alignment, seat depth, prong or bead security, spacing between links, and movement through the bracelet’s articulation points. A sample should be examined after normal handling and, when commercially justified, sent to an independent laboratory or inspection service for agreed tests. Acceptance criteria should be written before production, including allowable cosmetic variation, loose-stone limits, clasp function, and the procedure for handling nonconforming pieces.

Useful records connect inspection activity to the approved sample and purchase specification. Request an inspection checklist covering dimensions, metal or component identity, surface finish, plating appearance, stone security, clasp operation, branding, packaging, and quantity reconciliation. The record should show inspection timing, sample size or inspection basis, defect classification, inspector identity, date, and corrective action. Six inspection stages are valuable only when their checkpoints and acceptance standards are defined. Buyers should ask how defects are segregated, reworked, or reported, and whether a pre-shipment inspection is permitted. An independent final inspection can provide additional evidence, but it does not replace a clear specification, approved reference sample, and contractual remedy for deviations.

Compare quotations on an identical specification rather than on unit price alone. Each supplier should price the same metal, dimensions, stone grade or type, plating requirement, logo method, packaging, freight basis, tooling, sample charges, and applicable taxes or duties. MOQ may differ by style, color, material, or component, so request the reason behind each threshold. Lead time should be separated into drawing confirmation, sampling, material procurement, production, inspection, and dispatch. Ask which events start the production clock and what may change the schedule. A quotation is more reliable when exclusions, validity period, payment milestones, mold or tooling ownership, replacement policy, and rework responsibilities are written clearly. The lowest initial price can become expensive if critical assumptions are omitted.

The agreement should identify who owns the supplied artwork, CAD files, molds, tooling, brand assets, and approved samples. It should restrict unauthorized use, reproduction, disclosure, and sale of the buyer’s custom design, while distinguishing buyer-owned work from the factory’s pre-existing designs and manufacturing know-how. Include measurable product specifications, approval procedures, change-control rules, inspection rights, defect remedies, delivery obligations, payment milestones, confidentiality, and governing-law provisions appropriate to the transaction. Tooling terms should state who pays, where it is stored, who may authorize changes, and what happens when the relationship ends. Buyers should obtain legal review for material contracts, particularly when designs will be sold across multiple markets or involve significant tooling investment.