Range
Increase the range of machines that have a working area, not all machines accept range addons. Each tier increases the range by 1.
Speed
Increase how much the progress bar advances every tick.
Tier 1 -> +1
Tier 2 -> +2
Efficiency
Decreases the amount of ticks need to complete an operation.
Tier 1 -> -10%
Tier 2 -> -20%
Processing
Increased the amount of operations done when a machine finishes processing.
Tier 1 -> +1 Operation
Tier 2 -> +2 Operations