This firm was located in Turrella, Sydney from the late 1960s onward. They appear to be be a division of Anchor Plastics (Aust) Pty ltd.
Catspyjamas Etsy store:
https://www.etsy.com/au/listing/1679402486/wellmaid-and-ampac-sydney-picnic-camping
Past products included canisters, tumblers, sink plugs, ironing board covers, laundry bags, pot holders, swizzle sticks. They now specialise in polycarbonate glassware.
