Polypropylene (PP) bulk bag specifications include bag capacity, dimensions (length, width, and gusset), fabric weight (GSM), mesh count (threads per inch), denier of the PP tape, lamination details (thickness and type), lifting method (loops or sleeves), printing requirements, moisture resistance, safety features like anti-static or UN certification, and quality checks to ensure durability and prevent damage during use. These specifications vary based on the intended use, such as for industrial products, food, or hazardous materials.