What is the difference between bone china, new bone china, porcelain and stoneware?

Please verify the following points and require itemized written supplier responses:（ceramic tableware bone china comparison） Differences lie in raw materials, firing cycles, translucency, weight and durability. Bone china contains calcined bone; new bone china usually does not; porcelain uses kaolin, feldspar and quartz; stoneware has a thicker, more rustic body. Check translucency, compare weight, inspect glaze and finish, and rely on declarations and samples rather than product names. 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.