The literature survey
"Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents"
was done in the aftermath of SARS and MERS. While most of the detailed results were with common cold the SARS and MERS reesults match. In the absence of alternatives probably should be used for COVID-19.
https://www.journalofhospitalinfecti...046-3/fulltext
They talk about
- persist on inanimate surfaces like metal, glass or plastic for up to 9 days
at 20 C
Also - - up 28 days viablity at 4 C - COMMENT think of how fruit and veg are often
sold