1. AAA grade: in the form of porcelain or embryos, first select from the first-class products, select the embryos that are basically free of defects, and then carry out the processing process of flowering, glazing, and furnace firing, and then select the finished products after they are released from the furnace. , to remove the defective finished product, thus producing a AAA grade product.
2. First-class product: First-class bone china tableware embryos are selected from all the embryos that have been prepared, and the embryos without obvious defects are selected, and then processed to produce first-class products. International standards allow first-class products. No more than 5 defects are allowed in the product.
3. Second-grade and third-grade products: no matter what kind of defects there are, there are many black spots, and there are also deglazed products.
