As explained in the earlier posts, the directors issue the shares. The Act allows for both certificated shares as well as uncertificated shares. That means certificates are not obligatory (try telling a bank that), but the various registers are. Be aware that the Act actually provides for a maximum fine of R1m for non-compliance.

There are a couple of places where you can get pre-printed ones. Here is one http://sadiaries.co.za/50-company-act-2008 but I am sure there are others, just google it.