1.1211 (methylene fluoride one bromine methane), the room temperature slightly aromatic flavor, toxic, after use must be ventilated to prevent poisoning or suffocation;
2.1301 (bromine methane), ambient temperature slightly aromatic taste, toxic, after use must be ventilated to prevent poisoning or suffocation;
3.2402 (ethylene dichloride), at room temperature slightly aromatic flavor, hot and high temperature toxic, use must take good gas masks;
4.1202 (dichloromethane), at room temperature slightly aromatic taste, toxic, after use must be ventilated to prevent poisoning or suffocation;
5 F M200 (HFC-227ea), colorless and tasteless at room temperature, no toxicity, no ventilation after use;
6. Carbon dioxide (CO2), room temperature non-toxic tasteless, gas is suffocating, after use must be ventilated in case of suffocation;
7. Carbon tetrachloride (CCL4), temperature slightly sweet, when the flame is toxic, after use must be ventilated to prevent suffocation;
8. Dry powder (NAHCO3), non-toxic and tasteless at room temperature, when the fire is stimulated respiratory tract, after use must be ventilated;
9. Dry powder ($literal), non-toxic and tasteless at room temperature, when the fire is stimulated respiratory tract, after use must be ventilated;
10. Dry powder (Nh4h2pom), non-toxic and tasteless at room temperature, the fire can stimulate the respiratory tract, after use must be ventilated.