How should a commercial food warmer be cleaned and maintained?

Please verify the following points and require itemized written supplier responses:（commercial food warmer rice-warmer-cleaning） Clean the inner container, lid and seals after each use and dry thoroughly before covering to prevent odors and mold. Avoid steel wool, prevent impacts and replace aged seals promptly. 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.