English to Italian Marketing Retail shop

IF SPECIAL CONSTRUCTION AND CEILING SLITS ARE NECESSARY FOR THE INSTALLATION OF ILLUMINATION ELEMENTS (E.G. SUSPENDED ON PENDULUM), THESE WILL BE PROVIDED BY THE STORE WITH INHERENT RESPONSIBILITY AND IN AGREEMENT WITH XX PLANNING. IN THE EVENT THAT THE XXX SHOPS HAVE AN EXISTING METAL SHEET CEILING, AND BUILT-IN LIGHTS SHOULD BE PLANNED, THE APPROPRIATE CEILING REINFORCEMENTS IN THE FORM OF SUPPORT PLATES OR SOMETHING SIMILAR ARE REQUIRED (TO BE PROVIDED BY THE CUSTOMER) FOR THE CEILING SLITS WHICH ARE TO BE MADE.