I have already checked mock-up in this just have only one design of PC version.
Can you please advise if you have more information.
Do you want responsive website or not.
Supplier (GEA) can be create parallax page scrolling website follow design in mock up for both version.
Also Supplier (GEA) can be create new design for mobile version of parallax page scrolling website.
I would prepare data for answer the question supplier after request quotation.