This is because most factories generally have a light inside the factory and 2 then it is necessary to check, in order to preserve the life of the Transformer and Stabilzer.
This is because most industrial plants generally have 2 lights inside, so there is no need to check in order to preserve the life of the Transformer and Stabilzer.
Because industry mainly general there will be a fire inside the factory and 2. Therefore, it is necessary to check in order to maintain the lifetime of the machine and Transformer Stabilzer.