' Technical department assume the cause of this problem maybe come from reaction is not complete because MPA mix suitable for porcelain process. However, this matter Patra used on bone china process which reaction less severe than porcelain process.
Therefore, R&D offer plate sagger firing on porcelain process after that firing to bone china in order to complete reaction and happen glaze coating on the surface. (Expect our material stop peeling after firing on porcelain process)