Shanghai No.2 Valve Factory Industrial Group (上海阀门二厂实业集团有限公司) traces its history to 1935 and designs and manufactures high, medium and low pressure and vacuum valves under the ‘Zhong’ brand. Its range includes gate, butterfly, globe, ball and check valves, used in petrochemical, power, steel, construction and fire protection applications, and it runs a 12,000 m² plant in Zhujing, Jinshan. Its fire valves and wet alarm valves hold fire product certifications 5982020ZY070055, 5982020ZY070053 and 5982020ZY070067 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.