... required by customer are available(up to 12colours).4.Moisture proof,food grade,free standing,laminated material,strong,5.widely used to pack ... your order is large your unit price will be lower.4. Different size and sample available5. We make the product quality ... or back sealing bag, self-sealed bag, shapes bags, self-standing zip lock, side-gusset bag, spout top, composite bag etc ...