Amcor Limited The company is an Australian-based multinational packaging company. Its headquarters are in Melbourne, and it is listed on the Australian Securities Exchange. It operates manufacturing plants in 42 countries, and has approximately 30,000 employees and annual sales of US$7,280 million and has a market value of US$5,020 million. The company dominates the Australian cardboard packaging market, and it is the world's largest manufacturer of plastic bottles.