Dear Sirs or Madam, We would like to tell you our company can produce many kinds of water tank with PVC and food grade material, they are specially designed for temporary storage water, chemical and other liquid, there also have many kinds of shape of water tank, such as pillow, square, onion, and so on, our tank are all made from highly tensile polyester. Its frame work material is terylene fabric coated with special PVC on both sides. The main used in lifesaving, fire protection, fight a drought in agriculture, etc.