Which one is correct?

[MAJSH]

Dismantling and rei-insatallation of TV cabinet at different location in the living room
Dismantling and relocation of TV cabinet at living room

[Rover_KE]

Dismantling and rei-insatallation of TV cabinet at different location in the living room
Dismantling and relocation of TV cabinet at living room

If you're quoting a price for a job or sending a bill for it, say

'Dismantling TV cabinet and re-assembling it in living-room.'

Let us know if this is not the purpose of your query.

Rover

[MAJSH]

Thank you for your help

It is for sending an invoice, the work has already been completed.