Why do auto cascading systems use a proprietary blend of refrigerant?

Auto cascading systems use a proprietary blend of refrigerants to optimize performance and efficiency across a wide temperature range. These blends are specifically formulated to enhance thermodynamic properties, allowing for better heat transfer and energy efficiency. Additionally, using a proprietary mixture can help in reducing environmental impact and improving system reliability by minimizing issues like flammability and toxicity. Overall, the tailored composition ensures that the system operates effectively under varying conditions.