Standards

DB21/T 3852.5-2025 Active

DB21/T 3852.5-2025 Vegetable factory seedling production technical specifications Part 5: Cucumber. (English translation only)

Publish Date: 2025-11-30

DB21/T 3852.4-2025 Active

DB21/T 3852.4-2025 Vegetable factory seedling cultivation technical regulations Part 4: Pepper

Publish Date: 2025-11-30

DB21/T 3852.3-2025 Active

DB21/T 3852.3-2025 Vegetable factory seedling production technology specifications Part 3: Tomato

Publish Date: 2025-11-30

DB21/T 2008-2025 Active

DB21/T 2008-2025 The technical specifications for prevention and control of porcine parvovirus

Publish Date: 2025-11-30

DB21/T 4328-2025 Active

DB21/T 4328-2025 Soil Biological Health Evaluation Technical Specification for Dryland Farming Areas

Publish Date: 2025-11-30

DB21/T 4327-2025 Active

DB21/T 4327-2025 Water quality testing technical specifications for rural water supply projects

Publish Date: 2025-11-30

DB21/T 4326-2025 Active

DB21/T 4326-2025

Publish Date: 2025-11-30

DB21/T 4325-2025 Active

DB21/T 4325-2025 Rural logistics and mail services integration development service specification

Publish Date: 2025-11-30

DB21/T 4324-2025 Active

DB21/T 4324-2025 Guidelines for Non-Destructive Testing Technology for Urban Upgrading and Reconstruction of Underground Pipelines

Publish Date: 2025-11-30

DB21/T 4323-2025 Active

DB21/T 4323-2025 Urban tunnel structure health monitoring technical specification

Publish Date: 2025-11-30

DB21/T 4322-2025 Active

DB21/T 4322-2025 Green Building Operating and Maintenance Technical Regulations

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