It is the duplication of the "Duplication System"
What that means is;
When you design the system that can duplicate the original product (think of any factory); that is a duplication system
But when you can make duplicates of that factory in different places and countries; that is multiplication system
And this is not an easy mission, you have to come up with a system to copy every aspect of that "duplication system" staring with the infrastructure, the machines, the plans and systems of quality control ..Etc.
So, if you want to take over the world, you have to design the duplication and the multiplication systems
The most famous example of multiplication: franchising