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The manufacturing process in custom galvanized iron coil factories generally involves several key steps. First, high-quality steel sheets are sourced, which serve as the base material. These sheets go through continuous hot-dip galvanization, where they are immersed in molten zinc. This process is crucial because it creates a strong metallurgical bond between the steel and the zinc, ensuring superior corrosion resistance.
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The factory process behind metal lunch boxes often involved a series of intricate steps. First, the raw materials were sourced and cut into the appropriate sizes. Next, the metal sheets underwent printing, where vibrant colors were applied to create eye-catching designs. The pieces were then shaped, bent, and fused together, creating a sturdy construction that could withstand the rigors of daily use. Finally, a protective coating was applied to guard against rust, ensuring these lunch boxes would endure for years.
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