We have get the ISO9002 approval in 1997 and seven product items got the UL approval in 1997. Our UL product include: UL angle valve system ( include UL retard chamber + UL water motor gong + UL alarm valve), UL fog nozzle, UL foam head, UL deluge valve, UL angle valve, and all kinds coupling & valve, fire hose, foam tank, hose cabinet, hardware parts of fire fighting……