Face shields are considered by the medical profession as a secondary barrier to infection when worn in conjunction with fabric face masks.
More and more customer facing and indeed other staff are wearing a combination of fabric masks and visors and so demand is growing.
If you manufacture face shields/ visors locally here in South Africa you can register as a vendor on our COVID19 portal. It is non transactional rather it is a market place to match suppliers with potential buyers. Published guidelines for the manufacture of face shields can be found on the link below as well as on our registration form.