Consider the intended use, format and supporting information before choosing a material.
Begin with the use
Temperature, food or drink type, duration of use, size and handling can all influence which product to consider.
Compare the actual product
Material names alone do not establish every performance or disposal claim. Ask about the specific finished product, test conditions and available supporting documentation.
Bring your market into the discussion
Tell the supplier where you will sell or use the product so the relevant requirements can be reviewed for your request.