| Product Quality and Consistency | Stable performance across repeated production batches, with documented inspection criteria for dimensions, surface finish, assembly, and function. | Quality-control plans, inspection records, sample comparison reports, defect classifications, and retained production samples. | Reduces returns, customer complaints, rework, and inconsistent product appearance. | 20% |
| Material Selection and Safety | Materials should be suitable for the intended use and supported by traceable specifications. Metal parts should be checked for corrosion resistance and restricted substances where applicable. | Material specifications, supplier declarations, safety data where relevant, coating information, and test reports from competent laboratories. | Supports product safety, regulatory readiness, durability, and reliable long-term use. | 12% |
| Manufacturing Capability | Documented capability in processes such as stamping, wire forming, injection molding, machining, surface treatment, assembly, and packaging, according to product requirements. | Process flow charts, equipment lists, production samples, maintenance records, and process-capability data for critical dimensions. | Helps ensure the manufacturer can produce the required design accurately and repeatedly. | 14% |
| Customization and Engineering Support | Ability to support drawings, prototypes, tooling reviews, design-for-manufacturing feedback, and controlled engineering changes. | Technical communication process, prototype workflow, drawing-review examples, tooling ownership terms, and change-control procedures. | Shortens development cycles and helps avoid costly design changes after production begins. | 10% |
| Minimum Order Quantity and Scalability | Order quantities should match the buyer’s launch volume while allowing a clear path from pilot production to larger-scale manufacturing. | Quotation at different volume levels, pilot-order conditions, capacity statements, lead-time assumptions, and production scheduling rules. | Reduces inventory risk for new products while preserving access to competitive unit costs at higher volumes. | 8% |
| Lead Time and Delivery Reliability | Lead times should be clearly separated into sampling, tooling, production, inspection, and shipping stages, with realistic contingency planning. | Historical on-time delivery data, production schedules, order-confirmation procedures, and escalation contacts. | Improves inventory planning and lowers the risk of stockouts or missed retail and promotional deadlines. | 12% |
| Quality Management System | A documented quality system should define incoming inspection, in-process checks, final inspection, nonconforming-product control, and corrective actions. | Quality manuals, audit results, corrective-action reports, calibration records, and evidence of management review. | Creates a repeatable method for preventing defects instead of relying only on final inspection. | 10% |
| Compliance and Traceability | Products and materials should be traceable by purchase order, batch, production date, inspection status, and shipping documentation where needed. | Batch records, lot-control procedures, product declarations, applicable conformity documents, and document-retention practices. | Facilitates investigations, targeted recalls, customer audits, and market-entry requirements. | 7% |
| Total Cost of Ownership | Evaluation should include unit price, tooling, packaging, inspection, freight, duties, minimum-order effects, warranty exposure, and defect-related costs. | Comparable quotations using the same specifications, packaging assumptions, payment terms, delivery terms, and forecast volumes. | Prevents low purchase prices from hiding higher logistics, quality, or lifecycle costs. | 5% |
| Communication and Commercial Reliability | Responses should be timely, technically accurate, and documented, with clear ownership for quotations, approvals, changes, and claims. | Response-time records, quotation completeness, contract terms, warranty policy, payment conditions, and issue-resolution examples. | Reduces misunderstandings and makes long-term cooperation easier to manage. | 2% |