| Contract | Product specification accuracy | Confirm alloy, panel thickness, aluminum skin thickness, core type, coating system, finish, dimensions, tolerances, color reference, and packing method in the signed quotation and sales contract. | Every technical parameter is written in measurable units, including millimeters, coating thickness, tolerance limits, and applicable test methods. | The contract uses broad descriptions such as “standard quality” without defining the panel construction or acceptance criteria. | 15% |
| Contract | Technical compliance and documentation | Request current technical data sheets, safety data where applicable, factory quality records, and test reports that identify the tested product construction. | Test evidence is traceable to the quoted product and uses a recognized method, such as ASTM E84 for surface burning or EN 13501-1 for reaction-to-fire classification, where relevant to the project. | A certificate is supplied without a product description, test date, laboratory information, or connection to the ordered specification. | 12% |
| Contract | Quality acceptance terms | Check inspection stages, sample approval, allowable color variation, flatness, dimensional tolerance, defect definitions, inspection responsibility, and claim deadlines. | Acceptance criteria are agreed before production, with a documented process for pre-shipment inspection and nonconforming goods. | Payment is due before inspection, while the contract does not define how defects, shortages, or replacement costs will be handled. | 12% |
| Contract | Warranty scope and duration | Review the warranty start date, covered defects, exclusions, claim procedure, required installation conditions, remedy options, and freight responsibility. | The warranty clearly distinguishes manufacturing defects from installation, substrate, handling, cleaning, weather, and chemical-exposure issues. | The exporter advertises a long warranty period but provides no written exclusions, claim procedure, or remedy commitment. | 10% |
| Communication | Response speed and consistency | Record response times during quotation, sampling, technical clarification, and order changes. Compare answers from sales, technical, and production contacts. | Routine questions are answered within one business day, while technical or production questions receive a documented response within two business days. | Different contacts provide conflicting specifications, prices, lead times, or explanations for the same product. | 10% |
| Communication | Technical consultation | Ask about project location, building use, fire requirements, wind exposure, panel application, fabrication method, and installation environment. | The exporter asks project-specific questions instead of recommending one standard panel for every application. | The exporter promises suitability without reviewing drawings, local regulations, installation details, or environmental conditions. | 9% |
| Communication | Sample and color control | Verify sample size, color reference, gloss level, surface direction, protective film, batch identification, and approval records. | A signed or digitally recorded sample approval is linked to the production order and retained for comparison during inspection. | The supplier treats a small color image or informal message as the final color approval. | 7% |
| Communication | Schedule transparency | Request a production schedule covering raw-material confirmation, sample approval, manufacturing, inspection, packing, and shipment. | Lead time is stated separately from transit time, with written notice requirements for delays or changes. | The exporter gives only an estimated shipping date and cannot explain production capacity or critical-path activities. | 8% |
| After-Sales | Claims and corrective action | Confirm the claim submission channel, required photographs and batch information, investigation timeline, corrective-action report, and replacement or credit process. | Complaints are acknowledged promptly, investigated using shipment and batch records, and resolved through a documented corrective-action process. | The exporter requires extensive evidence but provides no response deadline or written resolution process. | 7% |
| After-Sales | Replacement and spare-panel policy | Ask whether replacement panels can match the original color, finish, thickness, and production batch, and who pays transportation and rework costs. | The policy addresses manufacturing defects, transit damage, shortages, and incorrect specifications separately. | The exporter offers replacement only as a future purchase and does not define responsibility for installation delays or rework. | 5% |
| After-Sales | Installation and maintenance guidance | Review installation instructions, recommended fasteners and sealants, protective-film removal guidance, cleaning methods, and storage requirements. | Guidance covers handling, storage, cutting, joint treatment, cleaning, and substances that may damage the coating or core. | The exporter provides panels without application guidance and rejects all claims related to installation or maintenance. | 5% |