| Product safety and standards | 18% | Valid certificates and test reports for the exact model; check applicable standards such as IEC 61643-11, GB/T 18802.11, or UL 1449 where relevant to the product and market. | Verify certificate scope, model numbers, issuing body, validity, and report traceability. A standard reference alone is not proof of certification. |
| Protection specifications | 14% | Datasheets stating the SPD type, rated voltage, maximum continuous operating voltage (Uc), nominal discharge current (In), maximum discharge current (Imax) where applicable, and voltage protection level (Up). | Compare like-for-like products and confirm ratings against the intended electrical system and installation point; do not treat unlike test ratings as directly interchangeable. |
| Product range and application coverage | 12% | Documented options for relevant residential applications, such as distribution boards, AC power lines, and signal or data lines, with clearly identified configurations. | Check that published models cover the buyer’s required system voltage, pole arrangement, installation method, and application; verify availability rather than relying on catalogue breadth alone. |
| Quality management and production controls | 10% | Current quality-management certificates, such as ISO 9001, plus documented incoming inspection, in-process checks, final testing, and nonconformance handling. | Confirm certificate scope and site coverage. ISO 9001 concerns a management system; it does not by itself certify an SPD product. |
| Testing and product traceability | 10% | Representative test records, calibrated test-equipment records, batch or date coding, and a process for tracing products to production and inspection records. | Review sample records and, where feasible, conduct a factory audit or independent sample testing. Match tested samples to the offered production model. |
| Manufacturing capacity and delivery reliability | 10% | Documented production facilities, relevant process capability, stated lead times, and evidence of capacity planning for the requested order volume. | Use site checks, production schedules, and order references where available. Treat unsupported output figures as unverified claims. |
| Engineering and product development | 8% | Engineering documentation, change-control procedures, product lifecycle support, and the ability to provide clear technical responses and drawings. | Assess the quality and timeliness of technical answers and confirm that any proposed design changes are documented and retested when required. |
| Export and market documentation | 6% | Accurate datasheets, installation instructions, packaging information, and destination-market compliance documents applicable to the specific product. | Check consistency across labels, certificates, reports, and technical documents; confirm that required local approvals are addressed for the destination market. |
| Customization and OEM capability | 5% | Written confirmation of available options such as labeling, packaging, terminals, or specified electrical configurations, together with change-control details. | Verify feasibility, minimum order requirements, sample approval, and whether modified products retain appropriate testing and compliance evidence. |
| Warranty and after-sales support | 3% | Written warranty terms, technical-support channels, replacement procedures, and clear handling of defects or product recalls. | Compare response commitments and warranty exclusions in writing; confirm that support arrangements cover the buyer’s market. |
| Total evaluation weight | 100% | Apply the same evidence standard to every candidate. Record unavailable or unverified information as “not verified,” rather than assuming compliance. |