I want to open a store in Hong Kong.

It is also my understanding that masks will not filter out the smaller droplets that viruses travel through the air on. These smaller droplets linger in the air longer and can be inhaled through most masks.

Another purpose is to filter the larger droplets that infected people exhale, sneeze or cough out and to limit the distance that droplets initially travel.

So masks have definite value, IMHO, and should be worn properly (i.e. hands off) but should not be considered strong protection against the virus.

I’m not a medical professional. This is what I’ve learned from TV, so take it for what it’s worth.

I really didn’t want to chime in but everyone must deal in fact. The virus is everywhere and spreads through micro- droplets where masks can help to an extent to reduce viral load within 6 feet before it falls to the ground BUT the virus is also likely to be aerosol air borne for up to 6 meters which is much more dangerous and masks don’t really help there particularly the kind being worn.
A mask helps if it’s an N95 and worn properly tight cupped fit but most people gain a false sense of security when wearing a bandana or scarf that is vented out the sides and then they don’t also properly distance themselves especially from the susceptible at/risk and wash their hands regularly.
I certainly wear one, an N95 when I’m out and about. Exercise regularly, keep your immune system in check, take vitamin D3, 5-10k IU a day along with vitamin K2 mk7 and magnesium. This is NOT political.

Masks are worse than useless. Reminder guys, I work in health care. The masks we are all being told to wear are procedure masks. They are intended only to stop spittle and droplets from talking infecting patients and medical equipment. They say right on the box they do not filter viruses or other contaminants. The vast majority of the air you breathe in or out goes right around the sides. They do not filter anything AT ALL!  

The next step up from a procedure mask is N95. These are intended to filter but in order to do this they must be carefully fitted. They come around with a test hood and if you can smell the odor its not filtering and you cannot wear N95. This happened to a couple of us here. Its pretty common.  

Even if you do get a tight seal every breath exhales moisture that clogs it and so the N95 is good for only a few hours.  

N95 by the way does not filter virus either. The situation really is like I said, trying to stop a mosquito with a chain link fence. That a mask works at all is based on the idea the virus is never just out there by itself, but is hitching a ride on a droplet. The problem with that being droplets go down to vapor, goes down to molecules.  

Anyone who has worked in a shop as I have, worn respirators as I have, will know perfectly well how your nose and throat gets plenty of dust. This is with filters many orders of magnitude better than the masks we are being forced to wear.  

It would be one thing if they worked. It would be another if we were told the truth and allowed to choose for ourselves. Instead we are all being forced to do something proven to have no medical efficacy whatsoever.  

This is not a health crisis. This is a political crisis.

I would get to know the lay of the land(Import logistics etc). Pick your market niche. You have competitors. A local to Asia or x patriot can be very helpful.
If you are going to sell American HiFi the key is knowing where to get it and who is holding.
Good Luck and bring plenty of green backs.