You need to make a proof (it used to be very troublesome to make a film). According to the closing time, you can correct the color or something (there is color difference when reading documents on the computer compared with printing)
3. It involves complicated processes, such as knife engraving, ultraviolet exposure, gold and silver stamping, etc. You should control the production cost.
The page number of your brochure must be a multiple of 4.
If you want to save money and the printing requirements are not too high, you can find a printing shop to make up.
These are the standard questions that should be paid attention to in prepress design.