How should rice dispenser capacity and efficiency be chosen?

Please verify the following points and require itemized written supplier responses:（commercial rice dispenser rice-dispenser-capacity） Choose by peak diners, grams per serving, servings per hour, refill frequency and mobility needs. For mobile use, check casters, brakes, cord length and aisle space. 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.