The phrase "and so contributing" is correct and usable in written English.
It can be used to indicate that an action or situation leads to a contribution or adds to a particular outcome.
Example: "The team's efforts were well-coordinated, and so contributing to the project's success."
Alternatives: "thus adding" or "thereby contributing".
Mr Byers said: 'Knowledgeable consumers stimulate businesses to innovate and so contribute to competitiveness.
Might it even suggest that Syria-Iran political and cultural relations helped sour sectarian relations and so contribute to the war?
Ms. Camp said the Barnes trustees were "not contemplated as a fund-raising board" and so contributed to the financial crunch.
Just as the car reduced our need to walk (and so contributes to obesity) and the calculator reduced our need to manipulate numbers (and so contributes to ignorance of mathematics), instant access to information will reduce our need to learn information.
Both the heating, which is normally fuelled by coal, and the chemical reaction it induces release large amounts of carbon dioxide, and so contribute to global warming.
The end of assignment removed the chief virtue of transportation, from the colonists' viewpoint, and so contributed to a vigorous movement against its continuation.
Time for the West to ditch the binary thinking that saw only terror or antiterror, Western values or Islamism, and so contributed to the dictators' lockdown.
Both of these methods of generating electricity are greener than the traditional ones because their exhausts are not so polluting (in particular they produce less carbon dioxide, and so contribute less to global warming).
The European Commission said that giving items Protected Designations of Origin (PDO) or Protected Geographical Indication (PGI) status can "create value, increase demand, avoid use of cheap raw material, secure local jobs and so contribute to agricultural and rural economy".
