Panel tanks are usually square or rectangle-shaped but, in some special circumstances, can also be L-shaped or U-shaped. These tanks are composed of several hot-pressed FRP panels that are bolted together to form the walls of the tank. As such, there is great flexibility in terms of the size of the tank that can be built. This option is selected when the size of the tank is too large to be manufactured as a cylindrical/conventional tank or to be transported safely/easily from a factory to the destination. Panel tanks are also preferred (regardless of the size) when the delivery time is tight. Since the panels are pre-manufactured and stocked, only assembly is required so the delivery time is relative fast. Special maintenance can be provided for installed tank as per the tank condition and maintenance instruction to be provided for authorized person. The most common application for Panel tanks is a water tanks, whether it is for smaller residential units or for larger industrial complexes. These tanks have an edge over conventional steel/aluminum tanks as they provide reliable, safe and hygienic storage of drinking water.