Alumina can be produced in various purities by adding additives to enhance its performance. The common purity range is from 90% to 99.9%, but Longci Ceramics typically use materials with a purity of 99.7%.

It can be processed by injection molding, compression molding, isostatic pressing, grouting molding and extrusion molding, etc. After sintering, processing can only be carried out using the diamond grinding method. The advanced green body and blank processing technology developed by Precision Ceramics Company enables the manufacture of more complex components using traditional processing methods. In addition, alumina can be easily bonded to metals or other ceramics through metallization and brazing techniques.

Alumina can be processed in green billets, billets or in a completely dense state. In the green or billet state, alumina can be processed into complex geometric shapes relatively easily. However, in order to fully densify the material, the sintering process will cause the alumina green body to shrink by approximately 20%. This shrinkage means that when processing alumina before sintering, very strict tolerances cannot be maintained. To achieve very strict tolerances, diamond tools must be used to process/grind fully sintered materials. During this manufacturing process, very precise diamond-coated tools/grinding wheels are needed to grind the material until the desired shape is formed. Due to the inherent toughness and hardness of the material, this can be a time-consuming and costly process.