| Initial Communication | Speed, clarity, and completeness of the first technical response. | Reply within 1 business day; quotation and technical questions addressed within 3 business days. | Email records, response templates, technical questionnaire, and quotation format. | High Priority |
| Project Management | Availability of a dedicated contact who coordinates engineering, sampling, production, and logistics. | One accountable project manager with defined escalation procedures and weekly project updates. | Organization chart, communication workflow, sample project schedule, and meeting records. | High Priority |
| Technical Quotation | Whether pricing identifies materials, finishes, packaging, tooling, testing, and shipping terms. | Line-item quotation with clear assumptions, validity period, payment terms, and change-order rules. | Redacted quotation, bill of materials, finish specification, and commercial terms. | High Priority |
| Design Feasibility Review | Ability to identify risks in geometry, casting, machining, cartridges, surface finishing, and assembly. | Formal design-for-manufacturing review before tooling approval, including tolerances and critical dimensions. | Design review checklist, marked-up drawings, 3D files, and corrective-action examples. | High Priority |
| First Sample Lead Time | Time from approved drawings and deposit to the first functional sample. | Approximately 20–45 calendar days for standard development; complex finishes or new tooling may require longer. | Milestone plan separating engineering, tooling, casting, machining, finishing, and assembly. | Verify by Project |
| Sample Functionality | Whether samples represent final materials, internal components, finish quality, water flow, and assembly condition. | Functional sample should use production-intent materials and components before mass-production approval. | Sample approval form, material certificates, cartridge data, flow test results, and finish reference panel. | High Priority |
| Revision Control | Ability to track design changes and prevent outdated drawings or samples from entering production. | Unique revision numbers, written approval records, controlled artwork, and documented change history. | Engineering change notice, drawing register, approval log, and sample identification method. | High Priority |
| Quality Management | Consistency of incoming inspection, in-process controls, final inspection, and nonconformance handling. | Documented inspection plan covering dimensions, leakage, pressure, function, appearance, packaging, and labeling. | Inspection standards, control plan, test records, defect classification, and corrective-action reports. | High Priority |
| Material Traceability | Traceability of metals, cartridges, hoses, valves, coatings, and other critical components. | Batch-level records retained through production and linked to purchase orders or shipment lots. | Material certificates, supplier records, batch codes, and production traceability samples. | High Priority |
| Surface-Finish Capability | Repeatability of polished, brushed, plated, painted, or specialty finishes. | Approved master sample, measurable acceptance criteria, controlled process parameters, and pre-shipment comparison. | Finish specification, color or gloss tolerance, process records, and reference panels. | High Priority |
| Compliance Support | Readiness to support destination-market requirements for materials, water contact, safety, and labeling. | Manufacturer provides applicable test reports and supports third-party testing before launch. | Current test reports, declarations, component approvals, and laboratory contact details. | High Priority |
| Minimum Order Quantity | Flexibility for launch quantities, replacement parts, seasonal collections, and product testing. | MOQ stated separately for development, pilot production, standard production, and custom finishes. | MOQ schedule, price breaks, setup charges, and low-volume production policy. | Compare Carefully |
| Production Lead Time | Time from approved purchase order and production sample to shipment-ready goods. | Commonly 30–60 calendar days for established products; new tooling, special finishes, or peak seasons may extend this. | Capacity plan, production schedule, historical on-time delivery data, and peak-season policy. | Verify by Product |
| Packaging Development | Protection, presentation, sustainability, labeling accuracy, and retail or project-site requirements. | Packaging validated through drop, vibration, compression, and handling checks appropriate to the shipment route. | Packaging drawings, carton specifications, test records, and approved artwork files. | Review Before Order |
| Warranty and Spare Parts | Clarity of warranty coverage, claim handling, replacement parts, and service response. | Written warranty policy, spare-part identification, claim response target, and long-term component availability plan. | Warranty terms, spare-parts list, service workflow, and replacement-part lead times. | High Priority |
| Tooling Ownership | Legal ownership, storage, maintenance, transfer, and protection of molds, fixtures, and product files. | Ownership and permitted use defined in writing before tooling payment or development begins. | Tooling agreement, asset register, maintenance terms, and exit or transfer procedure. | High Priority |
| Business Continuity | Ability to maintain supply during material shortages, equipment failure, labor disruption, or demand changes. | Documented backup suppliers, critical-component stock policy, preventive maintenance, and recovery procedures. | Business continuity plan, capacity overview, supplier contingency list, and risk register. | Validate During Audit |
| Long-Term Partnership Fit | Willingness to support product refreshes, cost engineering, forecasting, exclusivity, and continuous improvement. | Quarterly business reviews, shared improvement targets, forecast process, and transparent change management. | Draft partnership roadmap, performance dashboard, review agenda, and improvement program. | Strategic Factor |