The counterweight iron is one of modern machine manufacture industry foundation crafts.
配重铁是现代机械制造工业的基础工艺之一。
The counterweight iron is the humanity masters the quite early one metal hot-working craft, had the approximately 6000 history.
配重铁是人类掌握比较早的一种金属热加工工艺，已有约6000年的历史。
The counterweight iron classifies generally according to the modelling method, in the custom divides into the ordinary sand mold counterweight iron and the special counterweight iron.
配重铁一般按造型方法来分类，习惯上分为普通砂型配重铁和特种配重铁。
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