Mine electric locomotive transportation monitoring "letter, set, closed systems, mine wireless microphone system, mining flame-proof of the Ann model language alarm, mine water machine, water heater casting quotation for mine explosion-proof ark of steamed rice, underground video surveillance, underground special water machine, water heater coal mine in ordinary language alarm, the alarm of the bend, monkey car alarm system, LED display, all kinds of lights, alleys alarm, human body infrared alarm, roller, roller, nylon roller, aerial passenger device language alarm, chassis control language alarm, front fork indicator, pneumatic controller, dc power converter, the motor lock, LED display, all kinds of lights, alleys warning label, human body infrared alarm, nylon roller, roller, frame, frame, frame, frame drum drum drum drum, frame type precision casting frame drum, roller, car frame, frame, frame, frame drum drum drum drum, frame, frame, frame, frame drum drum drum drum, frame, frame, frame, frame drum drum drum drum, frame, frame, frame, frame drum drum drum drum, CheGuoAn administration to strengthen the underground metal &nonmetal mines safety of "six systems" construction, The "mine radio sound transmission system" of our company is one of the "six systems", which can guarantee the normal broadcasting and communication of the mine in case of emergency.