Comprehensive Guide to Selecting Agricultural Insect Nets: From Principles to Practical Applications. I. Insect Nets: Definition and Material Innovation. II. The Dual Role of Agricultural Insects: From Pests to Targets. III. Proven Effectiveness of Insect Nets: Data and Farmer Feedback. IV. Scientific Installation and Scenario Adaptation. V. Limitations and Mitigation Strategies. VI. Mesh Specifications: 40 vs. 50 vs. 60 Mesh. VII. Five Golden Rules for Purchasing Insect Nets. VIII. Future Trends: Smart Integration with Agriculture.