The size of objects is wrong

Hello everyone .
I'm doing some experiments with Blender4Web . Unfortunately , when I scale objects and export in html I can not view them as they should .
I attach images to make you understand better.

Can you help me?

Thanks in advance.

This is the building in blender:

And this the output in your player:

Hi. Console says almost everything you need.
You have non-uniform scale (it should be equal for all axes, e.g., [0.3, 0.3, 0.3]) on one of your cubes. This is a Blend4Web limitation.

Furthermore, you have exported your scene with older Blend4Web addon version and opening it with a newer engine version. You should update your addon.

Thanks a lot. Then the cube must be symmetrical … ; )

Probably, I was a bit inaccurate. The cubes will be symmetrical if you aplly scale on one of them. (CTRL-A ->"Apply Scale".)