Why can't my object be selected?

By inheriing from those interfaces, I just create a new tool.Here is the main idea :
Interact with UI elements, then load a new model from disk.
Finally, the model was successfully imported, but I found this new loaded model cannot be selected by controller. And the ray just pass through it!

I tried to select this model(A) in the Hierarchy, then duplicate this model(B), and then B can normally be selected by my controller.
How can I solve this problem?

 

Solved.

 

Please, don't do this. Explain how you solved the problem.