ZHONGHANGHUA.ZHONGHANGHUA (ZHH) was established in 1998, specializing in the sales of HT series safety valves and special valve products designed by Beijing Institute of Aerospace Power. Its core products cover safety valves (e.g. HTO, HTB, HTXD pilot-operated, HTGS for steam, etc.), breathing valves (8120/8130/8140 series and pilot-operated 9800/9900), Emergency relief valves, gas regulating valves, flame arrestors and self-contained return valves ( ARC1000/2000), etc. It also includes special valves such as cryogenic valves, lined valves, water strike relief valves, etc., which are widely used in the field of industrial fluid control.