The trace element Rh exists mainly in native platinum, platinum-iron alloy and Pt-containing osmiridium.

主要矿物是自然铂矿、铁铂合金、钌铱锇矿、等轴锇铱矿和铱锇矿。

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Brass powder: three kinds of powder, type10, type20 and type30, can been offered. Rare earth element and other trace amount of alloy element can been added.

黄铜粉：分10、20、30黄铜粉，可添加稀土等微量合金元素，分为用于含油轴承及金刚石制品两类。

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