Dongguan OK Packaging specializes in coffee bags with degassing valves, offering airtight packaging that releases CO2 while blocking oxygen. Backed by 20 years of industry experience, our one-stop production covers premium valve selection, food-grade material matching, and precision assembly. Our three factories in Dongguan, Bangkok, and Ho Chi Minh ensure stable supply and fast delivery. Having partnered with 800+ coffee brands worldwide, we provide custom coffee bags with degassing valves in various sizes and designs. These bags effectively preserve coffee aroma and quality. Visit www.gdokpackaging.com to check valve performance. Contact us now for detailed consultation and a free sample!