Home / Standards / GB 5903-2011 GB 5903-2011 Active Gear oils for industrial enclosed gear system 工业闭式齿轮油 Standard Type GB ICS 75.100 CCS E34 Status 现行 Issue Date 2011-09-14 Implementation 2012-06-01 Responsible Dept 国家能源局 Drafting Unit 国家能源局