20m3 plastic water tank can be produced just as vertical. Plastic tanks are produced with two colour options. First one is the white and the second one is the blue. White tanks are less costly than blue tanks. Plastic water tanks have advantages and disadvantages. The most important advantages are mass production and cheap prices. Disadvantages of tanks are unchangable dimensions and no production as horizontal over 5m3. Plastic water tanks are produced by polythene raw material. Polythene is the thermo plastic material. Its chemical resistance is high. But you should inform us during purchasing process, if you use tank for a different liquid except of water. 20m3 plastic water tank is one of the most sale product in these category.