Technical Support
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The HGSYSTEM suite of programs is provided from this web site completely free of charge. 

For further details please contact

HGSYSTEM@opc.shell.com
Subscription Service  
Technical Service If you need a particular scenario to be modelled in HGSYSTEM and the results analysed by our in house experts please contact us for a quote.
Consultancy If you have a situation that is not already covered by the HGSYSTEM suite of models we may be able to develop new modifications, or completely new models, that will suit your needs. Please contact us by email in the first instance and we can discuss your needs.