Does Chery Fengyun 2 have to put fluorine in the heater box?

I have to. According to relevant information, Chery Fengyun -2 must release fluorine when replacing the heater box. The warm air box is a heating component in the hot air conditioning system. When the water in the engine passes through the heater box, the heater box is heated, and the fan works to blow air against the heater box. The wind is heated when it passes through the warm air trough, so the warm air comes out of the air outlet.