Laboratory ceramic products category used in manufacturing R&D and quality control departments. Includes alumina crucibles, zirconia crucibles, quartz crucibles, ceramic evaporating dishes, porcelain mortars, ceramic combustion boats, crucible stands, ceramic tubes, and insulation tubes with excellent high-temperature resistance, chemical stability, and electrical insulation properties. Used for metal material melting tests, inorganic material analysis, high-temperature experiments, ashing tests, and insulation material evaluation in electronic component development. Essential for experiments in high-temperature, strong acid, and strong alkali environments where glassware cannot withstand. Classified by material type (alumina, zirconia, mullite, etc.) and shape (crucibles, dishes, tubular, etc.), clearly distinguished from plastic and metal laboratory equipment.