Yenziwe nge-alumina ceramic emsulwa kakhulu (ngaphezu kuka-99.5%), eyakhiwe ngokucindezela okubandayo kwe-isostatic bese ishiswa ngaphansi kokushisa okuphezulu, bese ishintshwa ngomshini futhi ipholishwe ngokunemba, izingxenye ezisele ze-ceramic zingahlangabezana nanoma yiziphi izidingo eziqinile zemishini ye-semiconductor ngezici zayo zokumelana nokuguguleka, ukumelana nokugqwala, ukwanda okuphansi kokushisa, kanye nokushisa.
Njengoba inezici zokumelana nokushisa okuphezulu, ukumelana nokugqwala, ukumelana nokuklwebheka kanye nokushisa, i-ceramic ingasebenza ezinhlotsheni eziningi zemishini yokukhiqiza ye-semiconductor enesimo sokushisa okuphezulu, igesi ye-vacuum noma igesi egqwalisayo isikhathi eside.
Yenziwe ngempuphu ye-alumina emsulwa kakhulu, icutshungulwa ngokucindezela okubandayo kwe-isostatic, ukuthungwa kokushisa okuphezulu kanye nokuqedwa ngokunemba, ingafinyelela ukubekezelela ubukhulu kufike ku-±0.001 mm, ukuqeda kobuso i-Ra 0.1, ukumelana nokushisa okungu-1600℃.