Otu n'ime ngwa kachasị ewu ewu maka quartz bụ dị ka countertop kichin.Nke a bụ n'ihi na ihe na-eguzogide okpomọkụ, ntụpọ na ncha, àgwà dị mkpa maka elu na-arụsi ọrụ ike nke na-egosipụta mgbe niile na okpomọkụ dị elu.Ụfọdụ quartz, nwetakwara NSF (National...
GỤKWUO