Hakanan Sanin azaman darajar A tare da babban tsafta tare da Sio2 a kusa da 99.7% -99.99%.
Mun zaɓi babban ma'aunin quartzite mai tsabta daga yankunan Donghai da Xinyi a matsayin ɗanyen abu.Bayan maganin wanke acid, silica crystalline yana canzawa zuwa silica amorphous tare da ƙananan ƙazanta a cikin tanderun juriya a zafin jiki na 1700ºC.Bayan aikin injiniya na musamman, nunawa, cire baƙin ƙarfe da sauran jiyya, babban quartzite mai tsabta yana samuwa a cikin lumps, granules da samfuran foda.