When purchasing nylon net scrap, the most critical factor is the material purity (PA6 vs. PA66). PA66 typically commands a higher price due to its superior heat resistance and mechanical strength. You must also verify the denier or filament thickness of the original nets, as this affects the recycling yield. Ensure the scrap is free from contaminants such as heavy oils, lead sinkers, or organic marine growth, which can damage extrusion machinery. Request a moisture content analysis, as high humidity in nylon can lead to degradation during the pelletizing process.