Coal Fire retardant agents, instrumentation, mine processing equipment and accessories sales; Because of technical advisory services; Mine works.
Coal Fire retardant agents, instrumentation, mine processing equipment and accessories sales; Because of technical advisory services; Mine works.
煤炭阻燃剂、仪器仪表、矿井设备及配件加工销售；矿井技术咨询服务；矿井工程施工。