Home / Standards / CB 419-1977 CB 419-1977 Abolished 转子式空气雾笛 Standard Type CB41 ICS N/A CCS N/A Status Abolished Issue Date 1977-01-01 Implementation 1978-06-01 Centralized Committee 中国船舶工业集团公司 Issuing Authority 中国船舶工业集团公司