Magnesium reinforced porcelain disinfection tableware crack how to repair?

In many cases, magnesium reinforced porcelain disinfection tableware will have cracks after a long period of use. At this time, professional people are needed to carry out repair work. What are the details. Due to the poor fetus and uneven enamel of magnesium reinforced porcelain disinfection tableware, or the crystallization or deposition of one or more of the synthesized components in some magnesium reinforced porcelain enamel, silica is deposited to a certain extent, glaze will turn milky white, or cover the color and decoration on the ceramic in the form of an opaque film. In the above situation, 1% hydrofluoric acid can be used for local application, and it can be applied for several minutes each time. After application, distilled water can wash off the acid marks, and then fine grinding with fine metallographic sandpaper, restore its transparency as much as possible and reveal underglaze embellishments. Glaze hardened lime substance can be removed by 5% hydrochloric acid or nitric acid. When bonding magnesium reinforced porcelain to disinfect tableware, it is necessary to take care of the adjacent relationship according to the design plan in advance. Generally, it can be glued from the bottom first, and some can be glued from the mouth edge, however, it is necessary to stick a piece without any mistakes. A piece of dislocation will affect the whole device. Edit: summer