Gray powder metal, pure, without any visible inclusions and oxidation color.

灰色粉末状金属，纯净、无肉眼可见夹杂物及氧化色。

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We have been specialized in Powder Metal Parts business for more than 15 years.

我们已专门在粉末金属零件业务已有超过15年。

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However nowadays it is still at the stage of exploring to utilize micro powder metal material for micro-fabrication.

而利用微纳粉末金属材料进行微成型目前尚处于探索阶段。

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The spray-on metal powder is 50% to 70% iron.

FORBES: Magazine Article

According to the criminal complaint, police were called to a Texas residence on Tuesday where they discovered bomb-making components including a galvanised metal pipe, fuse, lighter and explosive powder in bags.

BBC: Texas fertiliser plant blast: Criminal probe launched

Mr Cassagnes saw the potential for the toy when he noticed, while working with metal powders, that marks in a coating of aluminium powder could be seen from the other side of a translucent plate.

BBC: Etch A Sketch inventor Andre Cassagnes dies at 86