被c了一节课的林妙妙_日韩人妻精品中文字幕专区_91久久精品孕妇高潮喷水白浆_手机福利在线_十大禁止安装应用入口在哪里_(凹凸影业)亚洲性色vr_中国熟妇性视频chinese_影音先锋女人av鲁色资源网小说_av女人天堂污污污_在线观看内射_国产亚洲高清小视频_六夜婷婷午夜激情

The specific gravity of zinc oxide after high-temperature calcination (calcination temperature at 1250 degrees Celsius, Xinfengrun firing curve) will increase to 2.0 to 2.5. The use of glaze in the glaze is good, no thixotropic, no pinhole, can increase the speed of the kiln High yield bricks. Zinc oxide that is not calcined or whose calcining temperature is not enough and whose specific gravity is not enough will affect the process performance of the glaze and reduce the production stability.