Complex sentence: All the remaining 6 sets of SP1900 EMU will be also sent to MTR Pat Heung Depot one by one, making SP1900 EMU trains no longer servicing at East Rail Line (North South Corridor at future).
Split into simpler sentences: All the remaining 6 sets of SP1900 EMU will be also sent to MTR Pat Heung Depot one by one. That means SP1900 EMU trains will have no longer service at East Rail Line (North South Corridor at future).