Home / Standards / GB/T 4750-2002 GB/T 4750-2002 Abolished The collection of standard design drawings for household anerobie digesters 户用沼气池标准图集 Standard Type GBT ICS 27.180 CCS F19 Status 废止 Issue Date 2002-07-02 Implementation 2003-01-01 Responsible Dept 农业农村部 Drafting Unit N/A