DSOCC 12, or Grade 12 waste paper, is a premium-quality form of old corrugated containers that has been double-sorted to ensure minimal contaminants and superior fiber quality. It contains clean, dry corrugated cardboard, free from wax, excessive printing, plastic liners, and other prohibitive materials. Due to its high fiber content and purity, DSOCC 12 is highly sought after by paper mills for producing high-strength recycled paper products.