Wrong bounding box dimensions

Hi,

I noticed an error when I used it to do some calculations with the bounding box information of a shape.

result
X Y Z
CAD Assistant Min: -95.7296 mm, 29.6258 mm, -26.7835 mm
CAS Assistant Max: 0.384177 mm, 120.021 mm, 69.2307 mm

My code Min: -95.3497 30.0011 -26.4022
My code Max: 0.00350084 119.641 68.8494

my code:

    Handle(XCAFDoc_ShapeTool) shapeTool = XCAFDoc_DocumentTool::ShapeTool(readerDoc->Main());

    TDF_LabelSequence shapes;
    shapeTool->GetShapes(shapes);

    TDF_LabelSequence freeShapes;
    shapeTool->GetFreeShapes(freeShapes);

    qDebug() << "GetShapes():" << shapes.Length() << "GetFreeShapes():" << freeShapes.Length();


    TDF_Label rootLabel = freeShapes.Value(1);
    TopoDS_Shape shape = shapeTool->GetShape(rootLabel);
    TopoDS_Iterator iterator(shape, true, true);

    qDebug() << "Root boundry box ....";
    Bnd_Box box;
    box.SetGap(0);
    BRepBndLib::Add( shape, box);
    Standard_Real xmin, ymin, zmin, xmax, ymax, zmax;
    box.Get(xmin, ymin, zmin, xmax, ymax, zmax);

    qDebug() << "Bnd box-> Min" << xmin << ymin << zmin;
    qDebug() << "Bnd box-> Max" << xmax << ymax << zmax;

Do you have any idea about this?