Because the manufacturing process is the same as conductive ink printing, here the details will not be shown again. For more information, click here to learn Spreading, drying and over the firing oven, so that ink can be combined with ceramic substrate. The process is also printing, drying, high-temperature firing, but its firing temperature is lower than the conductor, generally about 400-500 degrees. Glass glaze can protect ceramic PCB from oxidation, wrong soldering, insulation, like soldermask in PCB , coverlay in flexible circuit board , and it can be used as insulated layer between traces. There’re two basic colors for glass glaze in thick film Ceramic PCB: blue and green.