Whereas , in order to ensure equal treatment for all interested parties within the Community , invitations to tender must be organized in accordance with uniform principles; whereas , to that end , decisions opening invitations to tender should be published together with a notice of invitation to tender in the Official Journal of the European Communities.
The above sentence is very complicated. Please provide me a simplified synonymous version consisting of multiple sentences:
In order to ensure that all interested parties in the Community are treated equally , calls for tenders must be organized according to uniform principles . For this purpose , in addition to the decision to open the tender , a tender notice must also be published in the Official Journal of the European Communities .