IPA: /nɒnprəˈdjuːsɪŋ/
KK: /nɑnprəˈduːsɪŋ/
Not involved in or capable of producing something.
The nonproducing assets of the company did not contribute to its revenue.
Nonproducing → It is formed from "non-" (meaning not) and "producing" (from Latin "producere", meaning to lead forth or bring forth). The word "nonproducing" means not bringing forth or yielding results.
Think of 'not' ('non-') and 'bringing forth' ('producing') to remember that 'nonproducing' refers to something that does not yield results.