The molar ratio of Pd and Ga is determined to be 1 according to the elemental analysis (Fig. ). The entire refined crystallographic information along with final results are compiled in standard .cif format and can be retrieved from (), using the deposition numbers CSD-1999938 to CSD-1999942. The detailed crystal structures were displayed in Fig. . Both PdGa-A and PdGa-B crystals are crystallizing in the FeSi type of structure without the mirror and inversion symmetries. In the same as other B20 chiral compounds, the intrinsic bulk chirality of PdGa is determined by the arrangement of Pd and Ga chiral motifs along the [111] direction. For A-type chirality PdGa crystal, Pd atoms are anti-clockwise stacked along the polar [111] direction, while Ga atoms are clockwise arranged. For B-type chirality, Pd and Ga atoms are stacked with an inverse sequence. Here we must point out that the definition of chirality for PdGa is different from the previously reported method, , where the surface chirality is derived from the different (111) and (1̅ 1̅ 1̅ ) termination that cutting from a same crystal (Note: The chirality comes from the surface termination, rather than bulk symmetry).