Home / Standards / GB 4696-1999 GB 4696-1999 Abolished Maritime buoyage system，China 中国海区水上助航标志 Standard Type GB ICS 47.020.70 CCS R63 Status 废止 Issue Date 1999-05-31 Implementation 2000-04-01 Responsible Dept 交通运输部 Drafting Unit N/A