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here tungsten carbide original manufacture jinzhao who produce these items as follow:(OEM ODM available).
carbide mining bits -------button/tips
carbide brazed tip
carbide CNC cutter insert
Carbide wood blade
carbide rod

if you are interested in that, discuss more details with me too.
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wechat:oliviareal
skype:Olivia real(wdym111)
whatsapp:+8613673135372

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