A communication exchanger has a memory which memorizes a presence state table for all of users and a forwarding destination table for each of the users. In particular, nucleic acid sequences of copalyl diphosphate synthase. The CRM may provide the user with a plurality of media pipelines to select from to override over which the desired program may be provided. These solid coke products can be used as boiler fuel in steam electric plants. An exhaust gas system and a vehicle having the exhaust gas system, are also provided.