Expanded metal mesh is a material punched into a diamond shape and then stretched to form holes in various geometric patterns. It is made from metals like steel, aluminum, stainless steel, and can be plated or coated for different applications. Expanded metal mesh has many uses including infrastructure, construction, machinery protection, and aquaculture due to its strength, flexibility, and ability to let air/water pass through while keeping things out. Its specifications include the material, thickness, width of strands, and whether it is flattened or in panel/roll form.