Are DualSun panels equipped with bypass diodes?

Yes.  Each DualSun panel is composed of 60 photovoltaic cells, which are divided into 3 groups of 2 columns of 10 cells.

Each of these 3 groups (A, B, C) is independent of the others in terms of production thanks to 3 bypass diodes that are located in the junction box at the back of the panel.

All the cells of one group are connected in series and thus the cell that produces the least sets the current of the whole cell group.  Thus if one cell of group A is shaded at 100% and thus has a current of 0 A, none of the group A cells will produce electricity either.  However, groups B and C will not be affected.