... convert and spun coder the operation of machine is rapid, accuracy, stable & reliable GY6D-600 COMPUTER COMPOUND SACK-MAKING MACHINECharacteristics: 1. Adopting ... 3. Adopting pneumatic pressure roller operation is easy to handle, with even pressure, high compound quality. 4. Adopting color code distinguishing ... width and length of sack making and printing supplied with equipment, also customized.