Folding Heaven and Earth Cover Separate Structure: The upper cover and lower bottom are two independent parts that are made separately and then fitted together. Fitting method: The upper cover is completely fitted outside the lower bottom. Usually, a "lining" is made inside the bottom or the product is fixed through precise size control. High end feeling: When opened, it has a sense of ceremony and is commonly used for gifts, luxury goods, electronic products, high-end cosmetics, and jewelry. Strong load-bearing capacity, no need for glue to bond the bottom, flat during transportation, saves space, and requires manual assembly before use. Neat and beautiful appearance, excellent opening experience. Good protection, can effectively isolate dust. Easy to retrieve and store contents multiple times. Strong display ability, fully presenting the content upon opening. Choose high-end gray board pasting copperplate paper, special paper, impregnated paper or fabric to increase strength and texture. EVA, sponge, plastic, or paper inner trays are often used inside the box to secure and protect the products. Can be hot pressed UV, Surface treatments such as embossing and film coating further enhance the sense of quality.