... 20ml 25ml 30ml 50ml 100ml 150ml 200ml- 2500ml.Varieties and applicationAlumina ceramic crucible and corundum crucible include: arc alumina crucible, square alumina crucible ... TV, rare earth materials, precious metals, and roasting high, medium and low ceramic capacitors, NTC, PTC piezoelectric ceramic and lithium cobalt oxide, lithium manganese oxide ...