The products are white micro powder,featured with high purity,low sodium content,high transition rate, less shrinkage rate. The following is the ... dry pressing,such as roller stick, water valve slice,frictional disk.YFCA-3G99.70.040.050.020.073.962.50.92 ... of granulation powder,ceramics by casting and iso-static pressing. high quality calcined alumina for fine ceramics