Selecting a reliable factory requires evaluating material safety, structural integrity, and manufacturing capacity. Prioritize factories that use non-toxic, lead-free powder coatings or 304-grade stainless steel to prevent avian heavy metal poisoning. Ensure the factory implements precision welding to eliminate sharp burrs that could injure birds. For bulk orders, verify the factory's monthly production capacity and their ability to provide customized wire spacing (e.g., 1/2 inch for small birds vs. 1 inch for large parrots) to meet specific market demands.