Iyada oo heerarkeeda sare ee chromium, molybden, iyo nitroben, oo ah 'moly aley' waxay leeyihiin iska caabin aad u wanaagsan oo ah kiimikooyin badan oo kacsan sida biyuhu aad u sarreyso sida birta birta ah sida birta ah, dhir jilicsan, dhirta kale ee geedaha koloriin-ka sare.