Grinding powders, grinding grain-powders, micro-grinding powders including sizes from n.125 to n.5, M63 to M5; electro-corundum 14A (normal); electro-corundum white 25A; silicon carbide green 63C; silicon carbide black 53C; boron carbide of fraction minus; boron amorphous; boron nitride hexagonal. Any packing up from storehouse in Moscow.