The hydrogenation process has the more advantages on environment protection than iron powder method, and has better quality.
试验数据表明，加氢法比铁粉还原法的产品质量好，且在环保方面有优势。
The processing technology of electroless copper plating on graphite powders by iron powder method and formaldehyde method were studied and evaluated.
研究比较了两种化学方法——铁粉法和甲醛法在石墨粉表面镀铜的工艺。
On the other hand, as iron powder surface modification method, the copperized replacement technics is simple, low cost, fast sediment speed and has little environmental pollution.
另一方面，置换镀铜作为铁粉表面改性方法，工艺简单，沉积速度快，成本低，工艺流程中环境污染小。
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