When sourcing a salt crusher, the material of construction is the most critical factor; it must be Stainless Steel 304 or 316L to prevent corrosion from high salt salinity. You should also evaluate the crushing fineness (mesh size), ensuring the machine offers adjustable screens or frequency converters to meet specific grain requirements. Additionally, verify the production capacity (kg/h) to ensure it aligns with your operational scale, and prioritize models with dust collection systems to maintain a clean working environment.