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最近談到幾個(gè)大單子,尋切削液配方的工程師合作 |
點(diǎn)評(píng)
基礎(chǔ)油不行,買(mǎi)國(guó)產(chǎn)的最好也買(mǎi)中高端的,低端的配料太差了。切削液不合格。別貪便宜。
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