Standards

DB21/T 4068-2024 Active

DB21/T 4068-2024 Environmental Air Quality Forecasting Technical Specification

Publish Date: 2024-12-20

DB21/T 4069-2024 Active

DB21/T 4069-2024 General technical specification for backfilling and remediation of mine pits using general industrial solid waste, including fly ash and slag

Publish Date: 2024-12-20

DB21/T 4070-2024 Active

DB21/T 4070-2024 Technical specification for energy consumption and environmental monitoring system of public buildings

Publish Date: 2024-12-20

DB21/T 4071-2024 Active

DB21/T 4071-2024 Asphalt pavement recycle aggregate application technical specification

Publish Date: 2024-12-20

DB21/T 4072-2024 Active

DB21/T 4072-2024 Rules for Underwater Detection and Monitoring Technologies in Water Transport Engineering

Publish Date: 2024-12-20

DB21/T 4073-2024 Active

DB21/T 4073-2024 The intermediate cultivation technology specifications for Litopenaeus vannamei seedlings

Publish Date: 2024-12-20

DB21/T 4074-2024 Active

DB21/T 4074-2024 European hybrids of pipefish cultivation technology specifications

Publish Date: 2024-12-20

DB21/T 3502.4-2024 Active

DB21/T 3502.4-2024 Green Prevention and Control Technical Regulations for Main Pests of Vegetable Facilities - Part 4: Aphids

Publish Date: 2024-12-20

DB21/T 3502.5-2024 Active

DB21/T 3502.5-2024 Green prevention and control technical regulations for major vegetable pests - Part 5: Aphids

Publish Date: 2024-12-20

DB21/T 3502.6-2024 Active

DB21/T 3502.6-2024 Green prevention and control technical regulations for major vegetable pests - Part 6: Larval leaf fly

Publish Date: 2024-12-20

DB21/T 4075-2024 Active

DB21/T 4075-2024 Grass straw picking and pelleting machine operation technical regulations

Publish Date: 2024-12-20

DB21/T 4076-2024 Active

DB21/T 4076-2024 Mechanical transplanting operation technology regulations for vegetable plug seedlings

Publish Date: 2024-12-20