@mahadisalim
It's great to read dear up's post it's really informative your post the way you presented it is appreciable anyway books are the main purpose of our life very important to change our life plays a role but as you mentioned about electrical technology, this thing is considered very necessary according to this era, because the era of today is the era of technology, if we will have information about it. We can survive in the society through these books we can get knowledge about it and can move our life forward. Very good guide you have done. Very well expressed. Thank you. You So Much will take care of you very much

And the way you have told about the business, how we have to start the business is very interesting point which you have discussed inside it can be very beneficial for an unknown person.
@mona01