GSP cv axle

I recently replace my original front end CV axles with GSP axles. I didn’t know at the time that they are the cheaper ones out there. But my question is do the boots come pre greased or do I need to add grease to the boots? I tried looking it up but couldn’t find much if they come pre greased or not. Any help or suggestions much appreciated.

 

I have no idea what a GSP axle is; is it a special put-it-together setup?

Since you mentioned boots, have to assume cv axles.

If it's a complete cv axle, should give you no reason to think you have to take it apart to add grease at all.