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*More refunds and less compensation, precise velvet saving * automatic allocation of large weight * automatic blockage cleaning, saving labor *Independent weighing, eliminating interference * USB import and export * Constant humidity control system *Gate closure to prevent rolling * Dual frequency drive for more power saving * Motor overcurrent, undervoltage, overvoltage protection *Universal use of velvet and cotton, reducing duplicate investment * More reliable dual photoelectric control * Independent adjustment of bilateral air pressure Additionally, optional features include voice function, Internet of Things function, QR code scanning and fluff filling, and data streaming push