INTERNATIONAL PATENT: CHINA RAILWAY CONSTRUCTION HEAVY INDUSTRY CO., LTD., 中国铁建重工集团股份有限公司, GUANGZHOU METRO GROUP CO., LTD., 广州地铁集团有限公司 FILES APPLICATION FOR "CLUSTER DOWN-THE-HOLE HAMMER"

Posted On: 2025-07-07

GENEVA, July 7 -- CHINA RAILWAY CONSTRUCTION HEAVY INDUSTRY CO., LTD. (No. 88, Dongqi Road, Economic and Technological Development ZoneChangsha, Hunan 410100), 中国铁建重工集团股份有限公司 (中国湖南省长沙市长沙经济技术开发区东七线88号), GUANGZHOU METRO GROUP CO., LTD. (Building A, Wansheng Plaza, No. 1238 Xingang East Road, Haizhu DistrictGuangzhou, Guangdong 510330), 广州地铁集团有限公司 (中国广东省广州市海珠区...

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INTERNATIONAL PATENT: CHINA RAILWAY CONSTRUCTION HEAVY INDUSTRY CO., LTD., 中国铁建重工集团股份有限公司, GUANGZHOU METRO GROUP CO., LTD., 广州地铁集团有限公司 FILES APPLICATION FOR "CLUSTER DOWN-THE-HOLE HAMMER"