OF® 3DM Gramaran Rock strictly selects natural minerals as the main anchoring raw material. A combination of environmental-friendly, energy-saving and carbon reduction technologies. Using industrial intelligent processing system and multi-pole 3D composite mold forming techniques, to create natural, multi-layered rough porous surfaces and three-dimensional natural cavity structures. High temperature molten liquid gas foaming and sintering process, capable of creating high degree two-dimensional and three-dimensional pores.