Messer provides customers in Belgium with an automated cylinder tracking system and monthly all-inclusive billing. This system offers great benefits, particularly for building contractors who use cylinder gases for welding and cutting at numerous construction sites. The cylinders are recorded in the system using bar codes, allowing their location to be identified at any time. This considerably reduces the number of unreturned cylinders, in turn lowering costs. The customer receives a total monthly bill that covers the recorded consumption of gases as well as all associated services such as transport or cylinder rental. Customers benefit greatly by knowing the exact purchase price in advance and not having to wait for the bill before being able to invoice their own customers. All documents, such as invoices and delivery notes, are sent to customers in digital format.