How do ODM manufacturers test the resistance of outdoor furniture to tanning oil stains?

ODM manufacturers rigorously test outdoor furniture for resistance to tanning oil stains to ensure durability and longevity. The process typically involves applying standardized tanning oil solutions to fabric or material samples and monitoring discoloration, absorption, and structural integrity over time. Accelerated aging tests simulate prolonged exposure to sunlight and humidity, while chemical analysis evaluates stain penetration. Manufacturers also conduct real-world trials in high-usage environments like resorts. These tests help refine materials and coatings, ensuring furniture withstands common outdoor challenges while maintaining aesthetic appeal. Compliance with industry standards like ASTM or ISO is often verified for quality assurance.