3500| 9
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鋁陽極染色前處理藥水成分請教 |
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點評
應該沒什么問題的,,一般不會用六價鉻的,沒聽說六價鉻對染色有什么幫助
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網安備33038202004372號 )
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