The phrase "an important supporting" is correct and usable in written English.
It can be used when describing something that plays a significant role in supporting a main idea, argument, or structure.
Example: "The research provided an important supporting detail that strengthened the overall thesis of the paper."
Alternatives: "a crucial supporting" or "a significant supporting".
It's an important supporting service to economic activity, as part of an overall strategy by a city for economic development.
Both Williams and Primus performed regularly at Café Society, and its owner, Barney Josephson, is an important supporting character in "Harlem Nocturne" — his club was a place of both political agitation and employment.
Focus is also given on uncertainties related to model tests as tank testing is an important supporting tool for design and operation.
There is a need to increase public awareness through litter education as an important supporting element and other initiatives that may be undertaken to reduce plastic waste and their impacts.
In fact, even if a domestic region does not engage in much direct trade with foreign countries, it can nonetheless be an important supporting player of global production networks by providing parts, components, and intermediate services to more export-oriented regions.
This highpoints the importance of plate tightening process, after its manufacturing, as a crucial specification parameter during the design of such type of heat exchangers; highlighting at the same time how the proposed CFD tool can act as an important supporting tool in the design of such type of complicated Heat Exchangers.
"For us at ATÁ," adds Atala, "we can be an important support, for local culture, for social benefits, for economic benefits, not only money.
Mrs. Balk served as an important support throughout her husband's distinguished career, as indicated in Balk's scholarly papers in the collections of the Newberry Library in Chicago and Syracuse University.
