Gas Leak Fire Alarm
Gas Leak Receiver
Gas Leak Sub-Receiver
Gas Leak Repeater
Gas Leak Detector
Terminal Board3
Gas Leak Indicator Light
Terminal Connection3
Electric Wire1
Cable3
Conduit9
Metal Ducts And Troughs6
Cable Rack9
Boxes2
Support Material7
Fireproof Compartment Penetration Treatment, Etc.8
Grounding Work9
Painting Work9
Construction Cost5
Direct Temporary Installation4
Suspension Work4
Removal And Reinstallation4
Demolition4