When sourcing catalysts, the price is heavily dictated by Active Component Content (e.g., percentage of precious metals like Platinum, Palladium, or Rhodium) and Surface Area (BET). You must verify the Purity Levels (typically >99%) and Particle Size Distribution, as these directly impact catalytic efficiency. For industrial applications, always request the Crushing Strength and Attrition Rate specifications to ensure the product can withstand high-pressure reactor environments without degrading.