When paving the floor, hesitate to decorate different materials. For example, in order to connect the floor with the door, you need to use high deduction. (It should be a slip of the tongue, but it may be called differently.)

Flat mouth strips are mostly used as link strips for doorways, floors and doorsteps. The closing strip is used for closing the floor.

You can ask if you don't understand. Yes, copper and aluminum are better.