Cua da dej siv nyob rau hauv microelectronics, optoelectronics, semiconductor, kws, khoom noj khoom haus, tshuaj, aerospace, tsheb, luam ntawv, kuaj thiab tsis muaj plua plav rhiav, ladder cleanliness rhiav plua plav-dawb rhiav, los ntawm tsawg huv si nyob rau hauv cov txheej txheem ntawm chav tsev mus rau hauv lub chav nrog high degree ntawm kev huv, tshem tawm cov plua plav tawm, txhua feem ntawm cov neeg muaj ntau dua 0.3 microns thiaj li tsis coj cov pa phem rau hauv lub tsev huv si.