https://www.liquidcontainment.com.au/product/242/Onion-Tank-30-000L Liquid Containment is a company that deals with Liquid Containment Solutions. They manufacture fuel bladders, Custom Pillow Tanks, flexitanks, Square Tanks, Onion Tanks ( OWT ), Panel Tanks, Fabricated Tank Liners, Petrol, Diesel, and Av Gas Bladders. Plus, their bladder sizes range from 2 liters up to 1 Million Litres in capacity. They also provide a small range of Fabric Solutions that are available upon request. Like Reinforced TPU, PU Film, and LLDPE.To know more about their information kindly check out their official site or call on 0405 138 664.