Feature 1. Heat seal, strong sealing strength, non-breakage, non leakage 2. Colorful and vivid printing, up to 10 colors 3. Moisture proof, light proof, air proof, vapor proof, odor proof, and punctures proof. 4. Durable, rugged Bag Type Bag Type: Stand up bag, 3-side sealing bag, zipper bag, middle heat sealed bag, side/bottom gusset bag, spout bags, aluminum foil bag, kraft paper, irregular ...