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Henan Yalong Diamond Tools Co., Ltd. is integrating scientific research ,design,manufacture,sales and service,which is one of the main enterprises of Henan Yalong Enterprises Group.It was set up in July 2001. It is a Hi-tech co***ny that manufactures polycrystalline diamond co***ct (PDC) and the relational products. The PDC is used in the oil well drilling, geology exploring, coalfield mining and mechanical industry. In 2003 the co***ny was certificated ISO9001: 2000 and awarded Good Credit Demonstration Un...
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