Production and sales of lined fire hose, KD65 type hose coupling, KY50 type pipe tooth coupling, KN65 type fixed coupling, KD50 type hose coupling, KY65 type pipe tooth coupling, QZ19 type straight stream nozzle, QZ16 type straight stream nozzle, DSB1 type fire emergency sign light, DYZ2 type fire emergency lighting, indoor pressure-reducing stabilized fire hydrant, fire start button, indoor fire hydrant, fire hose reel, aluminum products, precision castings, fire robots; sales of personal protective equipment, rescue and breaching equipment, surface rescue equipment, fire equipment, fire vehicles. Licensed items: various construction engineering activities; fire protection facility engineering construction; residential interior decoration.