When sourcing inkjet floor tiles, you must focus on HD printing resolution (minimum 300-400 DPI) to ensure realistic textures. Key technical metrics include the PEI Rating (Class 3 for residential, Class 4-5 for commercial) to determine wear resistance, and Water Absorption Rate (≤0.5% for porcelain, <3% for ceramic) to ensure frost resistance and durability. Additionally, verify the Mohs Hardness (typically ≥6) and Slip Resistance (R9 to R11 ratings) depending on whether the tiles are for dry or wet areas.