in the traditional photo vogue system applications, once the system exception occurs, roofed out photo vogue systems still still being ten hundreds or even thousands of votes. and when the fire accidents occurs due to the arc billing or external reasons. high voltage is always there. firefighting work is very dangerous. in the traditional photo voc system applications, once the system exception occurs, roofed photo vodki systems still mean ten hundreds or even thousands of votes. and when the fire accidents occurs due to the arc building or external reasons, high voltage is always there. firefighting work is very dangerous.