If divided by color, there is not much difference, as long as it is formal. It's not black air. They are all very safe. It's just a difference in color. Mainly, it depends on the valve on the gas tank. Is it a straight valve or an angle valve. A straight valve is safer.
Once a gas accident occurs, do not start any electrical equipment, including turning on lights, exhaust fans, range hoods, televisions, radios, making phone calls, etc. Open doors and windows for ventilation in a timely manner, and promptly report to the gas company.
2. Gas appliances should be selected from qualified products from reputable manufacturers, and should not be tempted by temporary cheap prices to bury hidden dangers of accidents.
3. When installing a gas water heater, it is necessary to hire professional personnel for standardized installation. When using the water heater, it is important to maintain good indoor ventilation.
When using gas, someone must be in front of the stove to monitor it. Before going out and going to bed every day, check whether the gas valve is closed properly.
When carrying out indoor decoration, gas facilities should not be moved, gas meters, gas pipes, etc. should not be installed in cabinets, and gas valves should not be sealed.
6. Gas stoves cannot be placed directly below the gas meter, and must be staggered more than 30 centimeters below the gas meter to prevent it from being heated or damp.