The Vahterus Plate & Shell heat exchanger with serial number 40 000 was delivered in Spring 2015 to one major European chemical company. The use of this exchanger is reactor temperature control, for both heating and cooling cycles using thermal oil as heat transfer fluid. The reactor are processing ingredients for sun screening products. Besides this new investment in their Swiss site, this chemical company has 400 Vahterus heat exchangers in use at their facilities worldwide. We are grateful for the long and good co-operation.