Turn off the main gas stove valves or not

After the close stove knob, you can not turn off the main gas stove valves?
You can not turn off the stove valves, the stove will not leak, which is built in to confirm the connection is no problem from the gas main valve to the hose connector between the stove (100% airtight, airtight), based on a It can do so. But taking into account the possible hose aging, loose connections and other security risks in use for many years, it is recommended to turn off the main gas valve safer. At the same time, we recommend that users do not have long to turn off the main valve or when taking a trip to prevent leakage.