This is a major criterion, as productivity reduces the cost of manufacturing. The O.E. machines that are now in market boasts of many a basic needs like, longer length of machine, higher speeds, able to process coarser hank, fewer changes for count, easy access to parts (less downtime for cleaning), longer production time between cleaning schedules, computerized controls for less power consumption and lower downtime and complete report generation giving leads to problem area are some points to discuss.