How to determine and exemption from stability and compatibility testing?

hello, we are a flexible film packaging supplier to better understand our product see below (most notably flexible ):

Automatic Packing | Inner Packaging Use Roll Stock 

• Flexible Packaging Film mainly uses for food or non-food automatic packing line use, flexible packaging films, also called lamination film or roll stock.
• Most flexible packaging films are made with 2 layers material, some with 3 layers, and usually not very thick that will save cost in large volume and high-speed process.

• In order to save cost for our clients, we will offer numerous material option for the testing at client’s side, this will save cost and ensure the quality and efficiency, in this way TedPack is trusted by many leading contract packagers, CPG’s, and mid-sized manufacturers.

Moving forward, I need to know if we are exempt from stability and compatibility testing as we don't even need this but please confirm.