Two of the different materials have their own advantages. The advantage of plastic is that it is easy to process, the appearance can be made more beautiful, and it can be made at a very low cost in mass production. But it does not mean that plastic is synonymous with low-end. Like some famous foreign brands, plastic materials are also used in high-end products, which can also produce good sound. However, domestic manufacturers have satisfactory indicators in terms of plastic material density and processing technology, and generally use plastic boxes in low- and mid-range products.