Deep rectangular gift tin boxes are based on a regular deep rectangular shape. The size design balances the needs of gift storage and visual coordination, precisely controlling every detail of the size. It not only ensures sufficient internal storage space, but also takes into account the convenience of gift display and carrying, adapting to various gift packaging scenarios. With a reasonable size ratio, it has become a gift tin box that combines practicality and aesthetics. Its size design runs through various dimensions such as the overall length, width and height ratio, internal capacity, and detailed dimensions. Each set of dimensions has been scientifically calculated to fit the actual needs of gift storage, without redundant design, so that the size and gift adaptability reach the best, highlighting the delicacy and sense of ritual of the gift.

　　The overall length, width and height ratio is scientific and reasonable. The mainstream standard sizes are divided into multiple specifications to adapt to the storage needs of different sizes of gifts. The core specifications include three types: the small size is 18cm×12cm×8cm, which is small and exquisite, suitable for storing small gifts such as small accessories, candies, and bookmarks, and easy to carry and display alone; the medium size is 25cm×15cm×10cm, with a moderate capacity, suitable for common gifts such as lipsticks, perfumes, and small ornaments, balancing the beauty of storage and display; the large size is 32cm×20cm×12cm, with sufficient depth, which can store large gifts such as scarves, wallets, and skin care sets, meeting various gift packaging needs. The length, width and height ratio of all specifications are controlled within the golden ratio, which is visually neat and atmospheric, without the abrupt feeling of unbalanced proportion.

　　The depth dimension is the core highlight. Compared with ordinary rectangular tin boxes, the height design of the deep rectangular gift tin box has more advantages. The depth of 8-12cm can accommodate more layers of gifts, while avoiding messy placement of gifts, facilitating layered storage. The depth dimension has been accurately calculated, which is neither too shallow to fully accommodate the gifts, nor too deep to appear bulky. Combined with the length and width design of the rectangle, it forms a regular storage space, which can easily accommodate gifts of different shapes and sizes, and reserves a reasonable margin to avoid gift extrusion and deformation, better protecting the integrity of the gifts.

　　The detailed size design fits practical needs. The size of the box cover perfectly matches the box body, and the error between the length, width and height and the box body size is controlled within 0.1cm. After closing, it is seamlessly connected, which not only ensures the regularity of the overall appearance, but also enhances the sealing performance, protecting the internal gifts from dust and moisture erosion. The edge width of the box body is 1.5cm, which is precision polished with uniform thickness. It not only ensures the firmness of the tin box, but also does not affect the overall size ratio due to the too wide edge. The hand feel is comfortable when holding, and there is no uncomfortable feeling of being stuck.

　　The size design balances versatility and adaptability. All specifications of tin boxes are produced with standardized sizes, which can adapt to common gift packaging linings, ribbons, labels and other accessories on the market, without additional customization, reducing the cumbersomeness of gift packaging. At the same time, the size design fits the display needs. Whether it is displayed alone on the desktop, combined with gift boxes, or displayed in bulk on the shelf, the regular rectangular size can present a clean and orderly visual effect. Combined with the gift itself, it can better highlight the delicacy and grade of the gift, making the size design truly serve the core needs of gift packaging.