i don't know the process, just a small toy box.
In my view, it should be used with ABS and injection molding.
here some of the information:
Expected Production Qty / Day = 800 pieces / 10 hour injection shift.
Plastic Injection machine capacity = Range from biggest 350 Ton / 32 oz, 200 Ton / 22 oz, 150 Ton / 16 oz, 80 / 4 oz