When the wafer is cut out into the next process, a temporary storage box is needed to protect the wafer from external dust and other impurities. There are also many 6-inch wafer packaging box manufacturers in China. The quality of the products produced by different manufacturers is different. The small factories produce cheap products, but the quality is not packaged. If there are any impurities in the packaging box, it is the product. The surface is not smooth and the color is uneven.