Full Inspection Escort, Guarding the Original Tea Aroma — Oval Tin Box for Tea, with 100% full inspection throughout the whole process as the core guarantee, relies on professional full inspection equipment and a standardized full inspection system to cover every link of product production, forming and packaging. It combines the regular texture of the oval shape with the sealing and sterile needs of tea storage, adapting to scenarios such as tea packaging, gift customization and tea gift boxes, becoming a high-quality choice for tea storage and gifting. We specialize in the R&D and production of oval tin boxes for tea, and deeply understand the strict requirements of tea for storage containers. Adhering to the full inspection concept of "every piece inspected, every piece high-quality", we have built a full-process full inspection system from raw material entry to finished product delivery, eliminating any minor defects with strict full inspection, guarding the freshness and original taste of tea, and meeting the high-quality and high-safety needs of tea packaging.

　　Full raw material inspection, holding the quality bottom line from the source. After each batch of production raw materials (food-grade tin alloy, sealing rubber ring, environmental protection ink, etc.) enters the factory, 100% full inspection is implemented, and sampling inspection is refused. Professional full inspectors conduct one-by-one inspections on the core indicators of the raw materials such as material, purity, environmental protection and adaptability relying on high-precision testing equipment. The purity of the food-grade tin alloy base material must be more than 99.9%, free of impurities and harmful residues, meeting the national standard for metal products in contact with food, ensuring no pollution when directly contacting tea; the sealing rubber ring is made of food-grade silicone material, testing its sealing performance, high temperature resistance and non-toxicity, eliminating hidden dangers such as aging, odor and liquid leakage; the environmental protection ink has passed multiple harmful residue tests to ensure no heavy metals and no pungent odor, adapting to the environmental protection needs of tea packaging, eliminating any hidden dangers affecting tea quality from the source, and building the first full inspection line of defense for tea storage.

　　Full production inspection, controlling every detail throughout the process. In each core production process of the oval tin box for tea (stamping, welding, polishing, film coating, sealing and forming), a "full process inspection + special person on duty" mode is implemented. Each product must pass the full inspection before entering the next process, eliminating unqualified products from entering the subsequent links. The stamping process fully inspects the oval shape accuracy and line smoothness to ensure that each tin box is regular and symmetrical in shape, rounded and full in curvature, no skew, no creases, no defects; the welding process fully inspects the welding firmness and seamlessness, checking for welding beads, pinholes, gaps and other problems one by one to ensure that the tin box meets the sealing standard and prevents tea from getting damp and oxidized; the polishing process fully inspects the surface smoothness and edge roundness to ensure no burrs and no sharp protrusions, taking into account the use safety and texture; the sealing forming process fully inspects the sealing performance, adopting double detection methods of water injection and negative pressure to ensure that there is no gap after the tin box is closed, effectively keeping fresh and guarding the tea aroma.

　　Full finished product inspection, accurately screening every product. After production, it enters the 100% full inspection link of finished products. Full inspectors conduct comprehensive and dead-angle-free inspections on each oval tin box for tea in accordance with the exclusive standards for tea packaging containers. Focus on testing the sealing performance, simulate the long-term tea storage scenario, conduct a 72-hour temperature and freshness retention test to ensure no air leakage and no dampness; test the shape accuracy and surface texture, check the oval size and curvature one by one, and investigate defects such as surface scratches, paint peeling and blurred printing; test the environmental safety, detect harmful residues through professional equipment to ensure compliance with food-grade standards and direct use for tea storage; at the same time, fully inspect the packaging integrity and label standardization to ensure that each product is well packaged and clearly labeled, meeting the delivery standard of tea gift boxes. Only after all full inspections are qualified can the full inspection report be issued and the products be allowed to leave the factory, with a finished product qualification rate of 100%. With full inspection strength, it guards the quality of each oval tin box for tea, allowing each product to accurately adapt to the needs of tea storage and effectively lock the original taste and freshness of tea.