Kraft paper bag has very good hardness and stiffness, environmental protection and pollution-free, has special natural colors, can be white, brown and black, etc., full of personalization, feels very beautiful high-end. It is less flexible, not affected by heat and light, and has better stability; the opacity of paper can provide hidden isolation, so that some products cannot be seen from the outside of the package (except for with windows), satisfying people's curiosity. Kraft paper bags also have good breathability, softness, strength and controlled tearing properties.