17023| 21
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請教,這種銅套上面的石墨點是怎么加工的? |
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點評
這類小廠子我基本都去過了,做一個大項目,一路走,哪里都看,走到哪里,人家都請你去參觀,為了買他產(chǎn)品,包括各種離奇古怪的生產(chǎn),我都親眼見過,小鼻子的一米直徑大油港,送加拿大去修,我都看過,哈哈,
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