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  • The first difference is in the amount of zinc.

    concrete nails screws

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    concrete nails screws concrete nails screws

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  • According to the different requirements of the industry, in accordance with the standard allocation in the smelting furnace, put the different weight of alloy ingots, such as weaving, Ming, paper, lang, silicon, etc., this kind of smelting out of the data is called gold ore iron. Iron has gray iron, white iron and the above-mentioned gold, they have different characteristics, so in the industry according to their different characteristics to transport and selection.

    concrete nails screws

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