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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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One of the primary advantages of using corrugated galvanised steel roof sheets is their exceptional durability. These sheets are designed to withstand harsh weather conditions, including heavy rain, snow, and even hail. The galvanised coating prevents rust and corrosion, ensuring a longer lifespan compared to traditional roofing materials.