Fire Fighting, Fire Sprinkler, UL Sprinkler manufacturer / supplier in China, offering Residence Safety 68 Degrees Upright Type Bronze Fire Sprinkler Head K-Factor 5.6 Spray Nozzle, Esfr Stainless Steel Fire Sprinkler Head, K-Factor 16.8, Quick Response, Esfr 74 Degrees Brass Upright Type K-Factor 25.2 Fire Sprinkler Head and so on.