| 1. Product Capability and Outdoor Performance |
| Water and dust protection | At least IP65 for outdoor enclosures; IP67 offers stronger temporary-water-immersion protection when properly tested. | Request the complete IEC 60529 test report for the finished sound bar, including test model, test date, laboratory, and sealing configuration. | High risk: “Waterproof” appears in marketing materials without an IP rating or independent test evidence. | 12% |
| Operating temperature | A practical outdoor target is approximately −20°C to 60°C, subject to battery, display, amplifier, and enclosure design. | Check the specification for the complete product rather than only the speaker driver; request cold-start, heat-soak, and charging-temperature limits. | Unclear temperature limits can cause battery degradation, display failure, or amplifier shutdown in extreme climates. | 8% |
| Vibration and shock resistance | Product should be validated for vehicle vibration and transport shock; test methods should be defined in the quality agreement. | Review vibration-test conditions, fixture design, duration, fastener retention, connector protection, and post-test audio performance. | Loose mounting hardware, intermittent connectors, and rattling enclosures are common field-failure symptoms. | 8% |
| Acoustic and electrical specification | Require clearly defined RMS power, peak power, impedance, frequency response method, distortion limits, and battery capacity. | Compare the datasheet with an engineering sample and independent measurements; avoid evaluating products only by peak wattage. | High risk: inflated peak-power figures, missing distortion data, or inconsistent battery ratings. | 10% |
| Wireless and wired connectivity | Bluetooth version and profiles should be stated; USB, AUX, amplifier input, microphone, and remote-control functions should be documented where applicable. | Verify regional radio requirements, pairing stability, firmware behavior, audio latency, and compatibility with current mobile operating systems. | Connectivity may work in a demonstration but fail under vibration, distance, interference, or low-voltage conditions. | 6% |
| 2. MOQ, Pricing, and Product Development |
| Standard-product MOQ | Indicative private-label range: approximately 50–300 units, depending on packaging, labeling, and existing tooling. | Confirm whether MOQ applies per model, color, packaging design, destination market, or total order quantity. | Low quoted MOQ may be offset by setup fees, mixed-model restrictions, or non-refundable tooling charges. | 8% |
| Custom-design MOQ | Custom enclosure, tooling, electronics, or firmware projects commonly require several hundred to several thousand units, plus development fees. | Request a written breakdown of tooling ownership, engineering charges, sample fees, tooling life, and change-control costs. | Unclear intellectual-property ownership or undocumented engineering changes can create long-term supply dependence. | 8% |
| Sample and pilot process | Pre-production sample followed by a documented pilot batch and final production approval. | Check sample lead time, sample revision control, golden sample retention, pilot quantity, and approval sign-off procedure. | Production begins before the buyer approves a controlled sample or packaging proof. | 6% |
| Cost transparency | Quotation should identify product price, packaging, tooling, testing, documentation, spare parts, payment terms, and shipping basis. | Compare quotes using the same Incoterm, currency, product configuration, carton quantity, and compliance scope. | Price comparisons are unreliable when one quotation excludes testing, export packaging, or battery-related logistics costs. | 5% |
| 3. Certifications and Regulatory Documentation |
| Electrical safety | For applicable markets, request evidence aligned with the destination’s electrical-safety requirements, such as relevant IEC/EN standards and national conformity procedures. | Confirm that reports identify the exact model, electrical configuration, power adapter, battery pack, and responsible manufacturer. | High risk: generic certificates that do not match the shipped model or components. | 10% |
| Radio and EMC compliance | Wireless products generally require market-specific radio, electromagnetic compatibility, and unintentional-emission compliance. | Request applicable technical files, test reports, declaration documents, labeling artwork, and frequency-band information for each target region. | A certificate issued for a different radio module or antenna configuration may not support the final product. | 10% |
| Substances and environmental requirements | RoHS and REACH-related material declarations are commonly requested for European supply chains; other markets may impose additional substance rules. | Verify supplier declarations, material test scope, restricted-substance controls, and change-notification procedures. | Declarations without component-level traceability provide limited protection during customs or customer audits. | 5% |
| Lithium-battery transport documents | Products containing lithium-ion batteries generally require UN 38.3 test-summary availability and transport documentation; air shipments may require additional IATA-related controls. | Check battery cell specification, watt-hour rating, UN 38.3 summary, Safety Data Sheet, packing instruction, labels, and dangerous-goods capability. | Critical risk: inaccurate battery declarations can cause cargo rejection, fines, delays, or safety incidents. | 12% |
| 4. Quality Assurance and Warranty |
| Quality-management system | An ISO 9001-certified system is a useful baseline, but certification alone does not prove product quality. | Verify certificate scope, validity, issuing body, factory address, incoming inspection, process controls, and corrective-action records. | A certificate cannot replace product audits, production inspections, and traceability checks. | 7% |
| Pre-shipment inspection | Use a documented inspection plan covering appearance, dimensions, functions, Bluetooth, audio output, charging, water-sealing controls, and packaging. | Define acceptable quality limits, sampling level, critical defects, major defects, minor defects, and inspection-release authority. | Shipment is released solely on the supplier’s internal test without buyer or independent inspection. | 8% |
| Warranty period | A commercially common range is 12–24 months from shipment or delivery, with battery warranty terms often specified separately. | Confirm coverage start date, labor and freight responsibility, exclusions, repair or replacement method, and warranty claim response time. | “Warranty available” without written terms, RMA procedure, or spare-parts support has limited practical value. | 8% |
| Failure-rate and service data | Require batch-level defect records and field-return analysis; target values should be agreed according to product maturity and contract terms. | Ask for first-pass yield, return-rate trends, top failure modes, corrective actions, and serial-number traceability. | Supplier cannot distinguish manufacturing defects from installation, misuse, water ingress, or transport damage. | 6% |
| 5. Global Logistics and Supply Continuity |
| Production lead time | Indicative planning range: 15–30 days for repeat standard orders; 30–60+ days for new packaging, customization, or component constraints. | Separate sample, tooling, material procurement, assembly, inspection, and export-document lead times in the purchase schedule. | Lead time is quoted from order confirmation while critical components are not yet available. | 7% |
| Shipping options | Capable suppliers should support suitable sea, air, rail, courier, or multimodal solutions, subject to battery and destination restrictions. | Compare EXW, FCA, FOB, CIF, DAP, or DDP only when responsibilities, customs clearance, insurance, and taxes are clearly defined. | DDP quotations may conceal customs, tax, importer-of-record, or battery-shipping limitations. | 6% |
| Export packaging | Use tested cartons with internal protection, moisture control where necessary, product labels, carton marks, and pallet requirements for the destination. | Review carton drop-test evidence, gross weight, dimensions, stacking limits, palletization, and container-loading plan. | Oversized cartons increase freight cost; insufficient protection increases cosmetic and water-sealing damage. | 5% |
| Supply continuity | Document approved component alternatives, safety-stock policy, end-of-life notification, and change-control requirements. | Identify single-source parts such as battery cells, amplifier ICs, Bluetooth modules, displays, and custom connectors. | Unapproved substitutions can invalidate compliance documents or change acoustic, battery, and reliability performance. | 7% |
| 6. Buyer Decision Scorecard |
| Recommended scoring method | Score each dimension from 0 to 5, then multiply by the suggested weight. | Use documentary evidence, sample testing, factory audit results, and shipment performance rather than sales claims alone. | Do not select solely on unit price; compliance and logistics failures can exceed the initial cost saving. | 100% total |
| Interpretation | 85–100: strong candidate; 70–84: conditional approval; below 70: corrective action or alternative sourcing recommended. | Critical failures in battery documentation, product safety, radio compliance, or water ingress should override the total score. | A high score cannot compensate for missing legally required documents in the destination market. | Use with due diligence |
