UV texture are dissapear in unity

I have a problem when i export my model in .fbx and then i import to unity but the part of model use the uv texture are disappear . What should i do help me Please T_T…

I use Program UVLayout to create UV texture.

Best regard. Thank you.
alt text

Hi. You have to check if the Face Normals are inverted. Each face has a positive and negative side, the positive is the one that is rendered by the engine. Your sotware must have an option like Show/Display backface culling, so you can check if the faces are being rendered…