Why is water absorption important for ceramic tableware?

Please verify the following points and require itemized written supplier responses:（ceramic tableware water absorption） Water absorption reflects body density. Low-absorption porcelain is less likely to absorb water, stains or odors and is more suitable for repeated dishwasher cycles. Include water absorption in specifications and verify it through unglazed areas, stain or soaking tests and third-party reports. 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.