When selecting nylon mosquito net fabric, the mesh density (holes per square inch) is the most critical factor. For standard protection against mosquitoes, a density of 156 to 230 holes per square inch is recommended. If the target market is prone to smaller insects like 'no-see-ums,' you must opt for a higher density of 300+ holes. Additionally, verify the denier (D) rating, which indicates fiber thickness; 50D to 75D is ideal for balancing lightweight portability with tear resistance and durability.