Onion tanks also known as “onion bladders”, are collapsible storage tanks designed primarily for liquid storage. Their unique shape resembles an onion, hence the name, and they are widely used across various industries for their versatility and ease of use. They are typically constructed from durable materials like PVC (polyvinyl chloride) which offer resistance to punctures, UV rays, and chemicals. Onion tanks are a practical, flexible, and efficient solution for various liquid storage needs. Their combination of durability, portability, and ease of use makes them suitable for a wide range of applications.