| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| NB/T 11889.12-2025 | English | RFQ |
ASK
|
3 days [Need to translate]
|
(Code for instrument and equipment validation of concrete tests for hydropower projects - Part 12: Concrete air meter of pressure type)
| Valid |