Plastic tank trucks offer unique advantages in liquid transportation, primarily due to their lightweight and excellent corrosion resistance. Plastics like high - density polyethylene (HDPE) are commonly used for the tank construction, providing protection against a wide range of corrosive chemicals. These trucks are also non - reactive with many substances, making them suitable for transporting food - grade liquids and certain chemicals. Plastic tank trucks are often more cost - effective than metal counterparts and require less maintenance. Their flexibility in design and compatibility with various liquids make them a popular choice for industries looking for efficient and economical liquid transportation solutions.