Classify each of the following activities as unit level, batch level, product level, or facility level for a manufacturer of golf clubs.

$\backslash$table$[[$Activity$,$Level$],[1.$ Designing new golf clubs,$],[2.$ Cutting metal into golf clubs,$],[3.$ Attaching grips on golf clubs,$],[4.$ Setting up cutting machines,$],[5.$ Cleaning factory,$],[6.$ Receiving metal shipments,$]]$