Tianjin VSAIL (天津福赛尔智慧消防技术) develops and manufactures automatic fire alarm systems, electrical fire monitoring, fire-door and power-supply monitoring and combustible gas monitoring, with further lines for electric-vehicle, rail and battery-energy-storage fire detection. The Wuqing plant is the named holder of the LPCB Red Book 1174 certificate family, covering EN 54-2 and EN 54-4 control and indicating equipment (1174e), EN 54-3 sounders (1174c), EN 54-7 point smoke detectors (1174a), EN 54-11 manual call points (1174d) and EN 54-17 short-circuit isolators (1174g). Its parent, Beijing Fusaier Safety Fire Equipment, was founded in 2004.