GTB Factory Overview Video Have a sneak peak over our state-of-the-art, one-stop location in Dandenong South, our manufacturing systems, highly trained workforce of over 140 employees, modern manufacturing facilities of 8,500sqm and a total site of over 45,000sqm. Enjoy! Case Studies GTB works with some of the biggest names across Australia. Click on the button below to read about the projects we’ve handled. Case Studies