The main technical indicators are as follows: The project indicators require that the appearance of the agent liquid is colorless or light yellow, and the pH value of the homogeneous liquid is 8 to 12. Internal pressure (25°C, MPa) ≤ 0.8 Decontamination rate (%) ≥ 90 Leak test (50°C ± 2 ℃, constant temperature water bath) Qualified ejection rate (%) ≥ 96.0 Foam retention time (min) ≥ 3 Heat resistance (50±2) ℃, 24h Return to room temperature can be used normally Cold resistance (-5±2) ℃, 24h Can be used normally after returning to room temperature