Yes, PISA does have a website... Well, sort of!? Their website is really aimed at military customers!! So... If your interest is in landing the SA knockoff of the Dassault Mirage, or delivering a battalion of paratroopers to take over a small nation then this is the site for you.
If on the other hand (as I suspect) you want to talk sport products and you're looking for something a bit brighter than Olive Green in your rig's colour scheme then you can contact them at:
Parachute Industries of Southern Africa (PTY) Ltd. P.O. Box 1616, Verulam, 4340, RSA.