How to use exists on this sql statment ?

Question

How to use exists on this sql statment ?

How to use Exists on this sql statement ?

update m set m.rohsstatus=RHst.Name from #ManuFacture m

inner JOIN Parts.ROHS Rhh WITH(NOLOCK) ON Rhh.ZPartID=m.PartID
inner JOIN Nop_AcceptedValuesOption RHst WITH(NOLOCK) on RHst.AcceptedValuesOptionID=Rhh.RoHSStatus AND RHst.AcceptedValuesID=911

i need to update table ManuFacture where part id exist on Parts.ROHS

so i need it as below

update m set m.rohsstatus=RHst.Name from #ManuFacture m

where exists(select 1 from Parts.ROHS)