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This article introduces Tube Chain Conveyor, a closed, flexible, dust-free conveying system ideal for powder, granular and small-bulk materials. It explains working principle, core advantages including low breakage, energy saving and 3D layout, application industries such as food, pharmaceutical, chemical and lithium battery, selection guide and daily maintenance. As a high-efficiency alternative to traditional conveyors, it provides safe, clean and cost-effective solutions for modern industrial handling.