INTERNATIONAL PATENT: CHINA COAL TECHNOLOGY ENGINEERING GROUP HUAIBEI BLASTING TECHNOLOGY RESEARCH INSTITUTE LIMITED COMPANY, 中煤科工集团淮北爆破技术研究院有限公司, CCTEG CHONGQING RESEARCH INSTITUTE, 中煤科工集团重庆研究院有限公司 FILES APPLICATION FOR "WIRELESS THROUGH-THE-EARTH INITIATION CONTROL SYSTEM"

GENEVA, March 16 -- CHINA COAL TECHNOLOGY ENGINEERING GROUP HUAIBEI BLASTING TECHNOLOGY RESEARCH INSTITUTE LIMITED COMPANY (150 Dongshan RoadHuaibei, Anhui 235000), 中煤科工集团淮北爆破技术研究院有限公司 (中国安徽省淮北市东山路150号), CCTEG CHONGQING RESEARCH INSTITUTE (No. 6, Erlangkecheng RoadJiulongpo District, Chongqing 400039), 中煤科工集团重庆研究院有限公司 (中国重庆市九龙坡区科城路6号) ...