The rectangular cookie tin container is a professional-grade metal container specially designed for the storage, packaging and transportation of cookies and various baked pastries. It takes food-grade tinplate as the core material, integrates precision manufacturing technology and practical design concepts, and has four core technical advantages: sealed fresh-keeping, strong structure, environmental protection and recyclability, and customized adaptation. It is suitable for home, commercial, gifting and other scenarios, meeting the storage and packaging technical needs of different users. From material to technology, from structure to function, it comprehensively ensures the storage safety and use convenience of products.

　　In terms of material technology, this product adopts food-grade tinplate that meets the standard of GB/T 2520-2017. The base material is 0.23mm thick SPCC cold-rolled steel plate, and the surface is treated with double plating of electrogalvanizing and tin layer. The thickness of the plating layer is controlled at 0.005-0.008mm, which not only improves the corrosion resistance and rust resistance of the material, but also ensures no odor and no harmful substances precipitation. It can be directly in contact with food, and has passed the double authoritative testing and certification of LFGB and SGS. The heavy metal content is far lower than the national standard, eliminating the hidden danger of food pollution from the source. It is suitable for long-term storage of various baked foods such as cookies, biscuits and pastries, effectively isolating external moisture, oxygen and dust, and extending the shelf life of food.

　　In terms of structural technology, the integrated precision stamping forming process is adopted. The box body and box cover are stamped synchronously, and the error is controlled within ±0.02mm, ensuring the box body is regular, the corners are seamlessly connected, and the overall sealing performance and structural strength are improved. The box cover adopts a snap-on sealing design with a built-in food-grade silicone sealing ring. The thickness of the sealing ring is 3mm, and the compression rebound rate is ≥85%. After closing, it can achieve full sealing, and the air leakage rate is ≤0.01MPa, which effectively locks the crispy fragrance of cookies and prevents them from becoming soft due to moisture, tainting and deterioration. The edge of the box body is carefully polished and chamfered 3 times, with a fillet radius of R2.5mm. The surface is smooth and burr-free, avoiding scratching hands during use, and improving structural stability. The stacking load-bearing capacity can reach 50kg, which is not easy to deform or damage, suitable for supermarket display, logistics and transportation and other scenarios.

　　The surface treatment technology supports diversified customization, and can adopt various processes such as silk screen printing, gold stamping, silver stamping, embossing and UV printing. The printing uses environmentally friendly food-grade ink with adhesion ≥4B, friction resistance ≥500 times, bright colors, not easy to fall off and no odor. It can accurately implant brand logos, product parameters, patterns and other information. The CMYK full-color printing reduction rate is ≥95%, meeting the visual presentation needs of different brands. At the same time, different sizes can be customized according to actual needs (conventional sizes: 12cm×8cm×6cm, 15cm×10cm×7cm, etc.), supporting window design (adopting high-transparency PET material with light transmittance ≥90%, impact resistance and not easy to break), and inner tray partition design (food-grade PP inner tray, which can separate cookies of different specifications as needed), improving the practicality and high-end texture of the product.

　　In terms of environmental protection and durability technology, the tinplate material can be 100% recycled, with a recycling rate much higher than that of plastic and paper packaging, conforming to the trend of green and environmental protection development and meeting the RoHS environmental protection standard. After use, it can be reused after simple cleaning, and can be used to store small items such as tea, stationery and jewelry, realizing resource recycling. The overall service life of the product is ≥5 years. After high and low temperature tests (-20℃ to 60℃), corrosion resistance tests and drop tests (no damage when dropped from 1.5m height), all performance indicators have reached the leading level in the industry, balancing practicality and durability. It is not only suitable for long-term home use, but also suitable for merchants to purchase in batches for product packaging and transportation, reducing long-term use costs.

　　The core technical advantages are prominent. This product not only solves the pain points of poor sealing performance, easy damage and non-environmental protection of traditional cookie packaging, but also combines standardized production technology with customized technology to adapt to different scenario needs. Whether it is the freshness and convenience during home storage, the brand display during merchant packaging, the safety protection during logistics and transportation, or the high-end texture during gifting, this rectangular cookie tin container, with professional technical parameters and reliable product performance, has become the preferred solution for cookie storage and packaging, balancing technical practicality and scenario adaptability, and highlighting quality and value.