【生活】撒水机，灭火器，自动的【生活】灭火设备，自动的

operational test for water fire-extinguishing system【安全】

fire-extinguishing plant, stationarily-arranged with hydrant

production of fire-extinguishing substances

fire-extinguishing powder

fire-extinguishing foam

fire-extinguishing plant,

stationarily-arranged fire-extinguishing plant

stationarily-arranged fire-extinguishing plants with