how do u find stole frez equip in the steel mill?

You just go to the basement of the facility, in the main hall where Joker's office is located, there's a door on the right, next to the crane in which you used to break the door of that office before, the door could be closed by a security gate, shoot it open with the elctric gun, then open the elevator doors with the encrypter, then use the electric gun on the box atop the lift to make the lift go up so you can pass through to reach the below level, then you will enter a hallway where some of the gang is playing a shooting game, defeat them and on the right side there's a little room, you'll find a box in the middle somewhere, and there it is.

You can find the location of Freeze's wife by looking at the map, I can give you a hint on what to do, use the ice floating trick to reach the back of the wharehouse.

BTW, Do you always type like this?

You might get better and faster help, if you make your messages clear for someone to understand them.