Two pre-trea tment technological formula on dipped zincate salt and dipped Zinc-nickel alloy which were practiced in our factory are compared.

 
  • 就浸鋅酸鹽和浸鋅鎳合金兩種預處理工藝配方在本廠(chǎng)生產(chǎn)中的實(shí)際應用情況作以比較。
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