Before I place my order, l want to find out some more details which I can't see it on line, then l call, wait for 10 minutes still on hold, finally give up. Anyway, l place my order on line, l tried to put my unit number in the shipping form, no matter how much times l edit the unit number, still ended up not showing the no. Then l thought it might be their privacy protection not showing the no. At the end l have to pick it up from the post office (not big deal), because there is no unit number??? Apart from that, the delivery is extremely quick, only take 2days, they updated me every progress of the shipment. I am happy with it and highly Recommend for the delivery service.