Spherene, a Swiss software company, joins the 3MF consortium to advance open file formats. Its patented ADMS geometry engine generates complex internal density gradients and metamaterial structures used in aerospace and medical sectors, but existing formats lack lossless transfer of such data. The 3MF volume extension implicitly maps complex geometries with minimal file size, bridging the data chain from design to manufacturing. Spherene's next-generation technology will integrate design, simulation, and functional requirements at the volume level.