An yi shi da foda mai tsarki, sandar yumbu ana ƙirƙirar ta ne ta hanyar matsi busasshe ko matsi mai sanyi, ana yin sintetiki a ƙarƙashin zafin jiki mai yawa, sannan a yi masa injin daidai. Tare da fa'idodi da yawa kamar juriyar gogewa, juriyar tsatsa, tauri mai yawa, tauri mai yawa da ƙarancin matsi mai ƙarfi, ana amfani da shi sosai a cikin kayan aikin likita, injinan daidai, laser, metrology da kayan aikin dubawa. Yana iya aiki a yanayin acid da alkali na dogon lokaci, kuma matsakaicin zafin jiki har zuwa 1600℃. Kayan yumbu da muke amfani da su yawanci sune Zirconia, 95% ~ 99.9% Alumina (Al2O3), Silicon Nitride (Si3N4), Aluminum Nitride (AlN) da sauransu.