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DBT集团公司是一家以生产长壁采煤设备及相关设备为主的公司。DBT长壁采煤系统及每一台设备都是根据用户的具体条件设计定做的，这样可以保证用户所拥有的技术最适宜并且花费的成本最低。DBT公司自40年代初涉足长壁开采领域以来，一直为用户提供最先进的长壁采煤技术，并且在世
DBT Group Company is a company mainly engaged in the production of longwall coal mining equipment and related equipment. DBT longwall coal mining system and each device are designed according to the specific conditions of users, so as to ensure that users have the most appropriate technology and the lowest cost. Since its involvement in the field of longwall mining in the early 40s, DBT has been providing users with state-of-the-art longwall coal mining technology and is now