Copyright: Tianjin Bureau of Geology and Mineral Exploration and DevelopmentTianjin ICP No. 17005563-1
Address: No. 20 Yingshuidou, Nankai District, Tianjin, China Tel: 022-23699570 E-mail: tjdkj@tj.gov.cn
Technical support:Tianjin Geological Engineering Survey and design Institute geographic information center

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