For your deliveries, then this from WHO (World Health Organisation ) might help
How long does the virus survive on surfaces?
The most important thing to know about coronavirus on surfaces is that they can easily be cleaned with common household disinfectants that will kill the virus. Studies have shown that the COVID-19 virus can survive for up to 72 hours on plastic and stainless steel, less than 4 hours on copper and less than 24 hours on cardboard.
As, always clean your hands with an alcohol-based hand rub or wash them with soap and water. Avoid touching your eyes, mouth, or nose
So you could spray the moulding parcel with disinfectant, and leave for 24 hours before opening.
Artwork, well most will be on paper, so you could leave in a well ventilated area ( not in any packaging ) for at least 24 hours, then you should be able to store your normal way, I think the main problem area will be when with the customer , when discussing how to frame the work.
I have been thinking about our (mine ) procedures for when the government allow us to reopen in a restricted manner, because we will still have restict our contact with one another, just as it is now with shops, queuing, one way systems, social contact, etc, some of the thoughts I have had are
Appointment only, for both bringing in work and collecting
Putting all our protection policy on our website and social media, so customers are aware
Putting up plastic, screen at counter
Have already (before lockdown) covered counter with plastic , for easy cleaning/ replacement
Wearing gloves
Customers not allowed to handle moulding & mount samples
Once customer has left , cleaning counter, door handles etc
For customers collecting, by prior appointment, get completed work ready on customer's side of counter, just handy wrapped, so they can see it, credit card terminal ready on customers side of counter, for easy/safe payment ( possible payment in full when placing order)
Possibly getting customers emailing photos of the artwork / photo, along with what they want, then using Preview/ visulation software to email customers with examples for the to choose, then they can drop work , very short visit
Trying to get customers to use what mouldings I have in stock first ( partly due to the fact I'm relocating in a few months, so trying to move dead stock

)
Still open to other ideas, still thinking. ......
