Pur Oxy Black B . C. 34- 3068 , Pur Oxy Black B . C 34-3069, Pur Oxy Black B . C 34-3190, Pur Oxy Black B . C 34-3180, Pur Oxy Black B . C 34-3185, Pur Oxy Black B . C 34-3371, Pur Oxy Black B . C 34-3176,Pur Oxy Black B . C 34-2040, Pur Oxy Black B . C 34-3080, Pur Oxy Black B . C 34-3511 , Pur Oxy Black B . C 34-3551 , Pur Oxy Black B . C 34-3179-1 , Pur Oxy Black B . C 34-3179-2 , Pur Oxy Black B . C 34-3320-1 , Pur Oxy Black B . C 34-3515-1, Pur Oxy Black B . C 34-3170 , Pur Oxy Black B . C 34-3178-1
iron oxides 氧化鐵





