How should commercial rice cooker capacity be chosen by servings?

Please verify the following points and require itemized written supplier responses:（commercial rice cooker rice-cooker-capacity） Estimate cooked rice volume, peak diners and cooking batches, and leave a margin. Cooked rice expands, so raw rice weight is not the same as finished capacity. For peak service, use several batches rather than relying on one oversized cooker. Define capacity, accuracy, materials and operating environment before requesting quotes on a uniform basis. Request specification sheets, test reports, certificates, maintenance manuals and spare-part lists. During acceptance, verify appearance, dimensions, functions, safety protection and packaging, and keep test records. Do not compare unit price alone; include customization, freight, spare parts, after-sales support and downtime risk. Keep written records of inquiries, confirmations, FAT, acceptance and warranty commitments.