Standards

DB21/T 4196-2025 Active

DB21/T 4196-2025 Patent infringement judgment consulting service specification

Publish Date: 2025-10-30

DB21/T 4195-2025 Active

DB21/T 4195-2025 Intellectual property dispute mediation service specification

Publish Date: 2025-10-30

DB21/T 4194-2025 Active

DB21/T 4194-2025 Patent application pre-review service specification

Publish Date: 2025-10-30

DB21/T 4193.5-2025 Active

DB21/T 4193.5-2025 Special Duties Safety Technology Practical Operation Examination Specification Part 5: Cracking (Fusion) Process Operations

Publish Date: 2025-10-30

DB21/T 4193.4-2025 Active

DB21/T 4193.4-2025 Specialized Occupational Safety Technology Practical Exam Standards - Part 4: Hydrogen Addition Process Operations

Publish Date: 2025-10-30

DB21/T 4193.3-2025 Active

DB21/T 4193.3-2025 Special Duties Safety Technology Practical Operation Assessment Specification Part 3: Chlorination Process Operations

Publish Date: 2025-10-30

DB21/T 4193.2-2025 Active

DB21/T 4193.2-2025 Special Duties Safety Technology Practical Operation Assessment Specification Part 2: Polymerization Process Operations

Publish Date: 2025-10-30

DB21/T 4193.1-2025 Active

DB21/T 4193.1-2025 Special Hazard Operation Safety Technology Practical Examination and Evaluation Specification Part 1: Chemical Automation Control Instrument Operations

Publish Date: 2025-10-30

DB21/T 2512-2025 Active

DB21/T 2512-2025 Rice factory nursery greenhouse construction technical specifications

Publish Date: 2025-10-30

DB21/T 4192-2025 Active

DB21/T 4192-2025 Vehicle cleaning, disinfection, and evaluation of disinfection effectiveness for the transportation of livestock and poultry

Publish Date: 2025-10-30

DB21/T 2307-2025 Active

DB21/T 2307-2025 Mechanical operation technical specification for potato mulching and seedling planting

Publish Date: 2025-10-30

DB21/T 2306-2025 Active

DB21/T 2306-2025

Publish Date: 2025-10-30