When evaluating a medical mask making machine, focus on the production speed (typically 80-120 pcs/min), ultrasonic welding stability, and automated tension control. Ensure the machine supports multi-layer non-woven fabric feeding (usually 3-4 layers) and has a high-precision nose bridge insertion system. For long-term reliability, prioritize machines equipped with PLC touch screen control systems and servo motor drives rather than traditional stepping motors to ensure synchronization and reduce waste.