Fire Extinguishing System, Fire Sprinkler, Thermo Bulb manufacturer / supplier in China, offering Thermo Bulb /Sprinkler Bulb for Automatic Fire Extinguishing System/3mm/UL, 1600mm 120W Laser for Laser Machine/ Laser Cutting/ Laser Engraving/ Laser Marking, 1250mm 180W Laser for Laser Machine/ Cutting/ Laser Engraving/ Laser Marking and so on.