Eggshell porcelain wares, pottery, shell eggs as well as
difficult. And the most expensive among the wares are made of kaolin, a pure white. The ratio of iron oxide in the soil is very low, mixed with feldspar quartz stone, limestone and kaolin clay at the right ratio. And with the clingy fit the mold was thin egg shells. Sintering temperature of 1260-1335 ° C, the product has to be very strong, translucent thunderous percussion. Liquid water can not seep through.
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