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An Edge Crush Test (ECT) machine is essential for assessing the strength and durability of packaging materials, especially corrugated boxes. By applying pressure to the edges of a sample, the machine measures its resistance to crushing. This test is crucial for determining the stacking strength and overall quality of packaging, ensuring that boxes can withstand the rigors of transportation and storage. Learn how ECT machines work, their significance in quality control, and their role in optimizing packaging performance.