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Beijing Longyuan Environmental Protection Engineering Co., Ltd.

9th-10th Floor, 5 Biuld B2, No. 9 Yard, Chegongzhuang Street, Xicheng District, Beijing 100044, P.R. China.
Tel: 86-10-88395976-862/892 Fax: 86-10-88395981  Email: shichang@bjlyhb.cn

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