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Dril craidd diemwnt

Mae ein drilio petrolewm pwyllgor penderfyniadau cynllunio did / olew & nwy dril did, sydd i gyd yn eu defnyddio ar gyfer drilio daith. O'i gymharu â darnau y corff dur, y corff matrics sy'n fwy addas ar gyfer graig galed. A oes darnau gwaith dau nag y corff dur.


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銑削刀具 專業生產廠,HAINAISEN 是中國的領先之一銑削工具的廠家。歡迎光臨批發銑削工具從我們,我們總是有廉價的產品,為您提供。
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