New Diffit order? Please send POs to schools@diffit.me.
You can mail checks to:
DIFFIT INC
PO BOX 10673
PALATINE, IL 60055-0673
Note: We do not accept POs for individual subscriptions -- learn more here.
New Diffit order? Please send POs to schools@diffit.me.
You can mail checks to:
DIFFIT INC
PO BOX 10673
PALATINE, IL 60055-0673
Note: We do not accept POs for individual subscriptions -- learn more here.