1) ZSFZ wet-type alarm valve 2) ZSFM deluge alarm valve 3) ZSFC dry-type alarm valve 4) ZSFU pre-act system 5) Temperature sensing deluge alarm valve 6) ZSFX-D signal butterfly valve 7) ZSFX-Z signal gate valve 8) ZSFP automatical exhaust valve 9) ZSFPD25 electric exhaust valve group