Basic difference between the flame safety lamps (GL - 5,50,60&7)

Hello viewers,
                        Welcome to our website.Here we discuss about the difference between the Flame Safety Lamp models . Here we just discussed the basic important parts through which we can able to find out the difference between these 4 flame safety lamps (GL-5,50,60&7).
On our next upcoming videos we are discussing in detail on each model of flame safety lamps. For notes or any doubt you are can contact me on: miningstudies@gmail.com