I see the problem
Yes, Ali has everything you need and then some…
But even there is it hard to find a compressor kit rated for more than normal freezer temps.
What do you need those extreme temps for?
I just assume not really for filament drying…
For example, using Freon you can go to around minus 100 degrees Celsius with ease…
It usually isn’t used for anything above minus 40 LOL
Even R600 can be abused to lower than minus 40 if need be.
The problems with the design requirements.
Take a simple water cooler/dispenser.
A tiny compressor with a clever evaporator design keeps a reservoir cooled or for a a larger dispenser cools the outlet pipe directly.
The condenser in those cases can be like on an old fridge - just a pipe snake with wires to help the cooling.
To make it compact a fan is used and the air goes through a radiator like condenser - like in your pic often with a water line to keep the footprint even smaller.
So a cold trap is no issue at all, but cooling like a bar fridge sized box down to minus 40 and holding it is a whole different story…
Not just because of the requirement to have a reverse cycle or heating elements to defrost…
You can quickly end up with a can of worms and won’t be able to make heads or tails out it…