Fire Fighting, Fire Sprinkler, UL Sprinkler manufacturer / supplier in China, offering Supply 5mm/3mm 68c/79c/94c Glass Bulb Pendent/Upright/Sidewall Fire Sprinkler, 3mm Fire Sprinkler Fire Fighting 79º C System Upright, Downward Type K = 5.6 Fire Sprinkler Head and so on.