XIAN TYDRILLBITS.CO.LTD

Date: 10th May 2016
Tapered PDC
Xi'an Tydrillbits Co.,Ltd is one of the most famous China tapered pdc manufacturers,Website:http://www.tydrillbits.com, welcome to wholesale cheap tapered pdc from our factory.Description of tapered PDC cuttersTapered PDC is made of tungsten carbide and diamond powder, because of its special shape, it is usally used in makeing superior coal cutting picks.?
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