In our office the WMF 10 is in operation since July last year, about 15 pads a day are consumed. 1. defect milk foam unit consisting of tube and sleeve / wrench we wanted to exchange. WMF Customer Service call very friendly order processing, delivery to date none, time to 3 weeks now demand for 14 days: At the moment spare parts are not available! In China no chaos is apparently still supply shortage. 2. Defect: mixer in the milk foam unit broken (tee made of rubber), customer service, very nice, delivery within 3 days, bill came before the goods.