Cov pa roj tshwj xeeb feem ntau suav nrog cov roj purity siab, cov roj hluav taws xob, cov roj hluav taws xob, cov roj hluav taws xob tshwj xeeb (xws li hluav taws xob tshwj xeeb kub) yog ib ceg hnyav, nws yog ib qho ultra-loj scale integrated circuit (IC), lub tiaj tus ntaus ntawv (LCD, LED, OLED), hnub ci cell thiab lwm yam hluav taws xob ...
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