*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 * Universal use of velvet and cotton, reducing duplicate investment *Gate closure to prevent rolling * Variable frequency drive saves more power * Motor overcurrent, undervoltage, overvoltage protection Optional options include voice function, Internet of Things function, QR code scanning and fluff filling, and data streaming push