Standards

DB21/T 706-2025 Active

DB21/T 706-2025 Forest Management Technical Specification

Publish Date: 2025-12-16

DB21/T 4369-2025 Active

DB21/T 4369-2025 The design requirements for urban underground spaces should take into account the requirements of civil air defense projects

Publish Date: 2025-12-16

DB21/T 4370-2025 Active

DB21/T 4370-2025 People's Civil Defense Engineering Green Building Evaluation Requirements

Publish Date: 2025-12-16

DB21/T 4371-2025 Active

DB21/T 4371-2025

Publish Date: 2025-12-16

DB21/T 4372-2025 Active

DB21/T 4372-2025 Snowstorm investigation and risk assessment

Publish Date: 2025-12-16

DB21/T 4373-2025 Active

DB21/T 4373-2025 Technical Specification for Coal Mine Earthquake Monitoring Network

Publish Date: 2025-12-16

DB21/T 4317-2025 Active

DB21/T 4317-2025 Low-carbon development evaluation technical specifications for chemical industry parks

Publish Date: 2025-11-30

DB21/T 4318-2025 Active

DB21/T 4318-2025 Greenhouse gas product carbon footprint quantification methods and requirements Full vanadium liquid flow battery electrolyte

Publish Date: 2025-11-30

DB21/T 4319-2025 Active

DB21/T 4319-2025 Green tide satellite remote sensing monitoring technical specification

Publish Date: 2025-11-30

DB21/T 4320-2025 Active

DB21/T 4320-2025 "Guidelines for harmless treatment of steel slag"

Publish Date: 2025-11-30

DB21/T 4321-2025 Active

DB21/T 4321-2025 Hazardous waste disposal environmental risk assessment technical specifications

Publish Date: 2025-11-30

DB21/T 3165-2025 Active

DB21/T 3165-2025 Steel fiber reinforced concrete precast segment technical specification

Publish Date: 2025-11-30