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Hejian longyue drill bit manufacture co.,ltd

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Address: Junziguan Industrial Zone, Hejian City,Hebei Province Postcode: 062450 Telphoe: 86-317-3852994 Mobile: 86-15373538756 Fax: 86-317-3852994 Website: www.longyuebit.com E-mail: spring@longyuebit.com Contact: xuan wei