the volume level is represented graphically in percentage or decibels (db).

How would the previous sentence be correctly capitalized?
Answer: The volume level is represented graphically in percentage or decibels (dB).
gates, doors, garage doors, windows, shutters, automatic movements: every thing is under control through the quiko systems, that simplify the life and create around the consumer an atmosphere of refined comfort.

How would the previous sentence be correctly capitalized?
Answer: Gates, doors, garage doors, windows, shutters, automatic movements: every thing is under control through the QUIKO systems, that simplify the life and create around the consumer an atmosphere of refined comfort.
the harness bows are of wood, with fittings and decoration made from gilded bronze.

How would the previous sentence be correctly capitalized?
Answer: The harness bows are of wood, with fittings and decoration made from gilded bronze.
apartments in farmhouse, bettona, perugia, umbria

How would the previous sentence be correctly capitalized?
Answer: Apartments in Farmhouse, bettona, perugia, umbria