If you developed the eventreceivers, you have defined something like this
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
<Receivers ListTemplateId="104">
<Receiver>
<Name>MyEventHandlers1</Name>
<Type>ItemAdded</Type>
<SequenceNumber>10</SequenceNumber>
<Assembly>MyEventHandlers1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=4358f2a5344ff0dc</Assembly>
<Class>MyEventHandlers1.SimpleEventHandler</Class>
<Data></Data>
<Filter></Filter>
</Receiver>
<Receiver>
<Name>MyEventHandlers2</Name>
<Type>ItemAdded</Type>
<SequenceNumber>10000</SequenceNumber>
<Assembly>MyEventHandlers2, Version=1.0.0.0, Culture=neutral, PublicKeyToken=4358f2a5344ff0dc</Assembly>
<Class>MyEventHandlers2.SimpleEventHandler</Class>
<Data></Data>
<Filter></Filter>
</Receiver>
</Receivers>
</Elements>
As you can see, both receivers are ItemAdded event receivers. The upper receiver has a much lower sequencenumber, which will tell the sharepoint server what event should run first.
I hope this will help you