Home / Standards / GB/T 21403-2008 GB/T 21403-2008 Active Irrigation equipment - Differential pressure Venturi-type liquid additive injectors 喷灌设备 文丘里式差压液体添加射流器 Standard Type GBT ICS 65.060.35 CCS B91 Status 现行 Issue Date 2008-02-03 Implementation 2008-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A