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Switchboard:+86 10 63751701

Customer service:+86 10 63751701

Sales:+86 10 63751701

Fax:+86 10 58411668

Mail box:sale@dam999.com

Room 511, No. 5 Haiying Rd., Science City, Fengtai Dist., Beijing, China

Cortech Drilling Equipment Co.,Ltd.

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