When sourcing high-quality jute, you must evaluate the GSM (Grams per Square Meter), which typically ranges from 150g to 450g depending on the application. Ensure the weave density (e.g., 10x10 or 11x12 porter and shots) meets your durability requirements. For Oeko-Tex compliance, the fabric must be free from harmful substances like formaldehyde, pentachlorophenol, and heavy metals. Additionally, verify the moisture regain properties, as standard jute should maintain a level around 13.75% to prevent brittleness or mold.