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Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
For improving process system integration performance, an approach based on web service and STEP standard is proposed. Since the information integration is the basis of the system integration, an information model is discussed firstly. STEP standard is employed to describe the information in uniform format with EXPRESS modeling language. Secondly, with the application of web service, the process system integration approach is issued. The advances and features of the proposed approach are discussed. Finally, a case of the synthesis process of ethyl p-hydroxyl benzoate is studied to verify the practicability of the proposed process system integration approach.