The phrase "also indispensable to" is correct and usable in written English.
It can be used when emphasizing the essential nature of something in relation to another element or context.
Example: "Effective communication is also indispensable to successful teamwork."
Alternatives: "also essential to" or "also crucial to".
It was also indispensable to the elderly and people without cars.
During Deng's watch, China embraced potentially troublesome communications technologies — photocopiers, cellphones, fax machines — because they are also indispensable to modernization.
The South Bronx illustrates how government, although it can be obstructionist and infuriating, is also indispensable to urban improvement.
And then came the Brexit point: "He was also indispensable to the leave campaign, which means that he represents millions of voters on the most salient issue of our time".
Then there are his books about music: a 1971 survey of Mozart's piano concertos was his greatest labour of love – it took him eight years – but The Good Opera Guide, a new edition of which is out this month, is also indispensable to anyone who wants to engage with opera without swallowing the fiction that the plots make any sense.
It seems also indispensable to realize more detailed thermo-hydraulic calculations and especially to perform a sizeable R&D program on structure material capable to resist the corrosion induced by chlorides.
Effectual data size and degree of significance are also indispensable issues to be evaluated.
But he also became indispensable to Mr. Hu over the past five years, party officials said.
The historical thesaurus will also prove indispensable to anyone scripting a costume drama.
Also now indispensable to me is By Terry Eyebrow Mascara (£26), a patently obvious invention that, unfathomably, has taken until now to exist.
However, experimental studies will also be indispensable to verify our findings.
