When sourcing luggage trailers, prioritize the chassis material, typically hot-dip galvanized steel or reinforced aluminum alloy, to ensure corrosion resistance and structural integrity. Pay close attention to the payload capacity, ensuring it meets your specific requirements (e.g., 500kg to 2,000kg). Additionally, verify the suspension system type—leaf springs are common for heavy loads, while torsion axles provide a smoother ride for fragile cargo. Ensure the hitch coupler matches international standards like ISO 1103 or specific regional ball sizes (e.g., 50mm or 2 inches).