Any place where traditional stoves (gas stoves, gas stoves, diesel stoves) are used:

1, the kitchens of all catering industry hotels, pubs, restaurants, restaurants ......

2, the canteens of factories, colleges and universities, institutions, troops, hospitals, enterprises and public institutions (canteens), the trains, ships, and the Kitchen ......

3, especially suitable for no fuel supply or restriction of fuel use prohibit open flame occasions, such as basements, railroads, vehicles, ships, aviation, shopping malls, high-rise buildings kitchen ......