Grade Selection, Retro Texture — Retro Car Tin Box, with high-grade raw materials as the core support, deeply integrates retro aesthetics with strict raw material standards. It not only restores the classic charm of retro cars, but also achieves each high-quality product that can stand the test with the solid quality of graded raw materials. Adhering to the principle of "raw materials determine quality, and grades show style", we strictly classify and screen all raw materials of retro car tin boxes. From core base materials to auxiliary ingredients, we adopt high-grade industry standards, endowing products with dual advantages of retro texture and durability through standardized and graded raw material control.

　　The core base material adopts first-grade cold-rolled iron plate, which is a high-grade raw material in the industry. It is refined and processed from high-quality steel with an impurity content ≤0.02%. It has a uniform and dense texture, toughness far exceeding that of ordinary iron plates, and a thickness accurately controlled between 0.25-0.32mm. It is not easy to rust or deform, and has outstanding compression and drop resistance. It provides a solid foundation for the stamping and bending of retro car shapes, and can perfectly restore the smooth outline and detailed texture of retro cars, highlighting the retro sense of weight of the product. Compared with ordinary second-grade iron plates, the first-grade base material has a smoother surface and more uniform color, better adaptability to subsequent printing and film coating processes, and is not prone to paint peeling, film detachment and other problems.

　　Auxiliary raw materials all meet high-grade standards, with strict checks at every level. The surface film adopts food-grade first-grade PET film, which has high transparency, strong toughness, no odor and no harmful substances. It can not only effectively protect the base material, but also improve the surface gloss of the tin box, making the retro patterns clearer and three-dimensional, and at the same time has good wear resistance and scratch resistance; the sealing rubber ring is made of food-grade first-grade silica gel, with good elasticity and strong sealing performance, moisture-proof and dust-proof, suitable for the long-term storage needs of retro tin boxes; the printing ink adopts environmentally friendly first-grade soybean ink, which is full in color, strong in adhesion, free of heavy metal residues, and the printed patterns are not easy to fade, conforming to the texture positioning of retro products.

　　The grade of raw materials is traceable throughout the process. Each batch of raw materials has undergone professional testing and issued a grade test report to ensure the quality stability of first-grade raw materials. With the support of high-grade raw materials, the retro car tin box not only has an outstanding retro appearance, but also has long-term durability. It is suitable for various scenarios such as gift customization, collection and placement, and desktop storage. It not only meets the aesthetic needs of retro lovers, but also becomes a high-quality item showing taste with solid raw material quality, making each retro car tin box have both appearance and strength.