Also @fooca, according to google street view, the shown address on the link you provided; 27 Macbeth St, Braeside does not have a (or any) sign on it to reflect either BEV Plastics or Koppa engineering.
The registered address on the certificates (http://www.bevplastics.com.au/quality.html) for the two related businesses, BEV Plastics and Koppa are also different to the above address: Namely 2 Breaside Dr and 55 MacBeth St respectively.
