Organic pigment:
        Aniline black-1
        Toluidine Violet Red-1
        Silane coupling agent:
        Chloroalkyl series
        Fluoroalkyl series
        Carbamido series
        Alkyl series
        Mercapto series
        Amino series
        Epoxy series
        Cyanate series
        Phenyl series
        Acyloxy series