FM & UL approved,Equipped with a lockable, non-sparking, three-point ... NFPA,UFC Standard, got FM cerficates;Rocker handle; Zinc handle, operate freely, and with double key to securitySelfshut ... place to ensure that the closed state;Equipped with fusible chain, in the security situation keep the ... to prevent;overflow of liquid leakage. Galvanized steel with solid rib , can load maximum weight of 350 ...