Thanks for your answer.

Sorry for asking the same question over and over again.

I was disorganized.

I would like to solve the problem by outputting an obj file with part information using the method you taught me. Thank you very much.

that's right. I meant reducing the polygon count.

For this, I would like to compare the features of blender and poser and choose which one I think is better. Thank you again for your advice.

Thank you for your kindness.