This black ton bag launched by COSEK features "moisture-proof sealing+strong durability" as its core feature, designed specifically for moisture sensitive items such as grain, feed, chemical raw materials, etc. Using black PP woven fabric (including UV resistant additives) and PE anti-seepage film lining, paired with a blue handle (width 12cm), and a transparent sampling window at the bag opening, it is a professional packaging solution to prevent moisture and deterioration, and extend storage life, especially suitable for outdoor storage or long-distance transportation scenarios.