I need to get 3D design and mechanical model (STP file) for my product, which is an iPhone like smart power bank

My smart power bank will have the following capabilities:
A 99WH power bank.
Fast charging via 45W USBC port.
High Power (15Amps, 14.8V) output source to power external devices as food warmers as well as to charge batteries of Drones.
USBC and USBA ports to power external devices, limited to 45W.
User Programable - can set timing and power level.
Monitoring via a screen.

I have a rough idea about the look / feel , see attached document.

I need an expert to generate teh 3D photos as well as the mechanical model (STP file) for the supplier to do teh mold.

Please see attached document for more details.

I need it ASAP.