| Product fit and oven capacity | 15% | Internal cooking area, chamber shape, opening dimensions, intended food type, and stated production capacity. | Dimensioned drawings, model specification sheet, and a written definition of any stated capacity. | Check usable chamber dimensions against the size and quantity of food you expect to cook; clarify whether capacity is theoretical or tested. |
| Heating performance and fuel use | 15% | Specified operating-temperature range, heat-up time, temperature recovery, and gas consumption under stated test conditions. | Test records showing ambient conditions, fuel type and pressure, measurement locations, warm-up procedure, and consumption units. | Compare performance only when test conditions are alike. Treat unqualified temperature or fuel-saving claims as unverified. |
| Burner and gas-system safety | 15% | Burner configuration, ignition and flame-failure safeguards, gas type, rated input, and compatibility with local supply conditions. | Gas-system diagram, component specifications, installation instructions, and test or conformity documents applicable to the destination market. | Confirm fuel type and pressure before ordering. Have installation and commissioning checked by a qualified local gas professional. |
| Construction and thermal materials | 10% | Refractory chamber materials, insulation design, exterior finish, structural support, and access to replaceable parts. | Bill of materials, material data sheets where available, construction drawings, and maintenance instructions. | Check that quoted materials and thicknesses are stated clearly and match the production unit and approved drawings. |
| Applicable compliance documentation | 15% | Whether the exact oven configuration meets requirements for the intended country and commercial or residential use. | Certificates, declarations, test reports, and model references that match the quoted product and destination market. | Requirements vary by market. For covered gas appliances sold in the EU, check applicable obligations under Regulation (EU) 2016/426. ISO 9001 concerns quality-management systems; it is not product certification. |
| Quality control and production consistency | 10% | Incoming-material checks, assembly controls, leak testing, final inspection, and traceability of the finished unit. | Quality-control checklist, sample inspection report, test procedure, and production photos or video for the ordered configuration. | Agree on inspection criteria and acceptance steps before production; consider a pre-shipment inspection for higher-value orders. |
| Customization and documentation | 5% | Available sizes, finish options, control configuration, electrical requirements where relevant, and language options for manuals and labels. | Approved drawings, final bill of materials, installation manual, operating instructions, and spare-parts list. | Document all changes in the final order specification; confirm that manuals and labels match the delivered model. |
| Warranty and after-sales support | 10% | Warranty duration and exclusions, response process, technical support, replacement-part availability, and service responsibilities. | Written warranty terms, support contact process, recommended spare-parts list, and parts quotation with lead times. | Check who pays freight and labor for warranty claims, and whether wear parts and installation issues are excluded. |
| Commercial terms and delivery reliability | 5% | Quotation clarity, order quantity, production lead time, packing method, shipping terms, and payment milestones. | Itemized quotation, production schedule, packing details, and written shipping and payment terms. | Compare total landed cost, not just unit price; clarify responsibility for customs clearance, duties, and destination delivery. |