... are white micro powder,featured with high purity,low sodium content,high transition rate, less shrinkage rate. The following is the details of ... .2±0.2sphere-like particle,good flowability,less shrinkage rate,often used to make ceramics by hot pressing.YFCA ... 14%shrinkage rate,often used as raw meterial of granulation powder,ceramics by casting and iso-static pressing. high quality calcined alumina ...