Static Modeling and animation

Hi guys!

We are pitching for a AR project and we received a quote from the client saying they have a quote for much less costing.
Fortunately they shared the quote with us.
It goes something like this which is confusing “external model decoder,external marker decoder,static modeling and animation”

I am confused on the whole external thing and static modeling and animation.

what does “static modeling and animation” mean like static mesh but

This isnt realted to unreal engine in anyway.

Looks like “3D mesh modeling” and “model animation”, they are made by 3DMAX or MAYA or C4D.