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Beijing Keyscin Petrochemical Engineering Co., Ltd. Postcode: 100015 Address: Room 418, 4th Floor, 53 Zhaowei Building, No. 14 Jiuxianqiao Road, Chaoyang District, Beijing Contact information: Tel: 13522475341 ,Mr. Wang. Email: wangzhongyang@keyscin.com Tel. :0086-10-010-58671396 Fax. :0086-10-010-58671396