| Product Safety | 20% | Material safety, skin contact suitability, electrical safety, and the presence of restricted substances. | Complete material declarations and applicable safety documentation should be available before bulk production. | Review test reports, material certificates, safety data sheets, and product labeling. | Include safety documentation and change-notification obligations in the supply agreement. | Critical |
| Massage Performance | 15% | Massage intensity, coverage, comfort, noise, heat function, and control accuracy. | The sample should perform consistently through repeated use without unusual noise, overheating, or loss of function. | Conduct a 7-day functional trial with at least three users and record comfort, controls, noise, and heat observations. | Approve a signed reference sample and define acceptable performance limits for production batches. | Required |
| Sample Accuracy | 10% | Whether the production item matches the approved sample in dimensions, materials, color, functions, and packaging. | No unapproved design or material substitutions; all agreed specifications must be documented. | Compare the pre-production sample with drawings, specifications, photographs, and the approved sample. | Use a sample approval form with revision numbers and written approval before mass production. | Critical |
| Build Quality | 15% | Stitching, seams, fasteners, surface finish, structural stability, cable protection, and component assembly. | No loose stitching, sharp edges, exposed wires, unstable joints, or visible finishing defects. | Perform visual inspection, basic load checks, repeated adjustment checks, and packaging-drop inspection. | Set written workmanship standards and use an approved defect classification system. | Required |
| Durability | 12% | Resistance to repeated operation, folding, vibration, heat cycles, and routine cleaning. | The product should complete an agreed endurance test without material failure or significant performance deterioration. | Run repeated-use testing based on expected customer frequency and keep dated test records. | Review failure trends quarterly and require corrective-action reports for recurring defects. | Required |
| Order Consistency | 10% | Consistency across units, production lots, packaging, accessories, and user instructions. | Inspection results should remain stable across multiple production lots, with agreed acceptance limits. | Inspect a statistically reasonable sample from the first production lot and compare it with later lots. | Schedule pre-shipment inspections and maintain lot-level quality records. | Required |
| Production Capacity | 8% | Monthly capacity, equipment, staffing, peak-season planning, and ability to scale orders. | Capacity should cover forecast demand with additional planning allowance for seasonal fluctuations. | Request a production-flow overview, capacity statement, and realistic lead-time schedule. | Share rolling forecasts and reserve capacity through documented production planning. | Preferred |
| Lead Time Reliability | 5% | Sample lead time, production lead time, shipment preparation, and communication during delays. | The supplier should provide a written schedule and meet agreed milestones consistently. | Compare quoted dates with actual sample, production, inspection, and dispatch dates. | Use milestone tracking and require early notification for any schedule variance. | Preferred |
| Packaging and Shipping | 5% | Packaging protection, carton strength, moisture control, labeling, and shipping documentation. | Packaging should protect the product from common transport impacts and meet destination requirements. | Conduct carton inspection, dimensional checks, handling simulation, and document verification. | Approve packaging artwork and packing specifications before the first shipment. | Required |
| Communication and Service | 5% | Response speed, technical understanding, transparency, complaint handling, and after-sales support. | Questions should receive clear, documented responses within one business day during active projects. | Track response times, quotation accuracy, sample revisions, and resolution of trial-order issues. | Assign named contacts and establish a corrective-action response deadline. | Preferred |
| Commercial Stability | 5% | Pricing transparency, payment terms, minimum order quantity, warranty policy, and continuity risk. | All costs, replacement terms, minimum quantities, and price-adjustment conditions should be written clearly. | Review a complete quotation, pro forma invoice, warranty terms, and purchase agreement. | Use annual commercial reviews and avoid dependence on a single source for critical components. | Preferred |
