Ingenious Craftsmanship, Empowering OEM Customization — OEM Square Tin Box, with full-process precision craftsmanship as its core competitiveness, integrates multiple high-end processes such as stamping, welding, polishing and film coating. It combines the regular texture of square shape, structural sturdiness and customization flexibility, perfectly adapting to OEM processing needs in various scenarios such as food packaging, gift customization, industrial storage and daily chemical packaging, and becoming a high-quality choice for brand OEM. We specialize in the R&D and production of OEM square tin boxes, and deeply understand that craftsmanship is the core support of product quality. Relying on intelligent production equipment and a professional craft team, we have built a full-process craft control system. From base material pre-treatment to finished product delivery, every process is pursued for excellence, creating each OEM square tin box that fits the brand positioning and has reliable quality with ingenuity, helping brands improve product competitiveness.

　　Base material pre-treatment process builds a solid foundation for quality. High-specification cold-rolled iron plate is selected as the core base material, which first undergoes double environmental protection processes of high-temperature rust removal and chrome-free passivation to completely remove impurities and oxide layers on the surface of the base material, eliminate the hidden danger of rust, and at the same time improve the toughness of the base material and the adaptability of subsequent processes. It meets food-grade environmental protection standards and can directly contact various foods and daily chemical products. The pre-treated base material is finely polished to remove surface burrs and defects, making the surface of the base material smooth and delicate, providing a good foundation for subsequent stamping and welding processes, ensuring more accurate forming and more stable quality of subsequent processes, and ensuring the durability and safety of OEM square tin boxes from the source.

　　Core forming process creates regular texture. Adopting automatic precision stamping technology, equipped with customized square stamping dies, the mold precision is controlled within 0.02mm, and the stamping force and shaping angle are accurately controlled to ensure that the box body and cover of the square tin box are regular and square, the edge lines are straight and smooth, and the side length error does not exceed 0.05mm, perfectly meeting the standardization requirements of OEM customization. After stamping and forming, seamless welding technology is adopted to precisely weld the corners and joints of the square tin box. The welding joint is flat and smooth, no welding bead, no gap, completely eliminating the hidden dangers of liquid leakage and air leakage, and at the same time improving the structural sturdiness of the box body. The compression and drop resistance are far higher than the industry standard, adapting to long-term storage and bulk transportation needs.

　　Detail process upgrade, balancing texture and customization. After welding, comprehensive fine polishing is carried out, and the corners and joints of the box body are polished for the second time to ensure that the corners are rounded and smooth, no sharp protrusions, taking into account the use safety and visual texture; the surface process supports multi-dimensional OEM customization. According to customer needs, processes such as film coating, screen printing, gold stamping and embossing can be adopted to print logos, patterns and texts. The ink is environmentally friendly soybean ink, which is full in color, strong in adhesion, not easy to fade and free of harmful residues, perfectly presenting the brand tone. Each batch of finished products undergoes comprehensive process inspection, screening layer by layer from shape accuracy, welding quality, surface flatness to customization detail adaptability, with a finished product qualification rate of more than 99.9%, balancing process precision and mass production efficiency, meeting the diversified needs of various OEM processing, and empowering brand customization value with full-process ingenuity.