注：您提供的原文已经是英文，以下为您保留原格式和结构的内容：
Ton bags intended for long-term outdoor storage must undergo UV-resistant treatment; otherwise, they are highly susceptible to brittleness and cracking.
Foshan Hongyun Jiangtian Packaging, based on extensive real-world testing of numerous outdoor engineering projects:
Standard UV treatment: Can be used outdoors for 6–12 months.
Untreated: Will age, crack, and fracture within 1–2 months.
If you require outdoor storage, sea freight, or long-term stacking, we can customize high-grade UV-resistant ton bags.
Foshan Hongyun Jiangtian Packaging | Outdoor-Specific UV-Resistant Ton Bags
Phone: 18570518098 | Website: https://robotf.cn
Updated: April 2026