| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 50027-2024 | English | RFQ |
ASK
|
3 days [Need to translate]
|
Standard for hydrogeological investigation of water-supply
| Valid |
GB/T 50027-2024
|
| GB 50027-2001 | English | RFQ |
ASK
|
10 days [Need to translate]
|
Standard for hydrogeological investigation of water-supply
| Obsolete |
GB 50027-2001
|