When sourcing industrial tiles, the most critical factor is Mechanical Strength, specifically Breaking Strength (≥3000N) and Modulus of Rupture (≥35 N/mm²) to withstand heavy machinery and forklift traffic. You must also verify the Water Absorption rate (≤0.5%) to ensure the tiles are vitrified and resistant to moisture penetration. For safety, prioritize a Slip Resistance rating of R10 to R12 depending on the presence of oils or liquids in your workspace. Additionally, ensure the PEI Rating is Class 5, indicating the highest level of abrasion resistance suitable for heavy commercial and industrial use.