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OEM Design NPT 1/2′ ′ 3/4'' Pendent Upright Sidewall Sprinkler, Find Details and Price about Pendent Sprinkler Fire Sprinkler from OEM Design NPT 1/2′ ′ 3/4'' Pendent Upright Sidewall Sprinkler - Fujian Xinlongdu Fire Protection Technology Co., Ltd.