Avac A sheets are made with imported Korean Raw material which is FDA approved, The sheet has protective film on both sides, the White film has to be removed before the thermoforming and clear film has to be removed after forming. The side with the clear film is to be adapted to the model. The sheet gives maximum wear and tear resistance, resistance against discolorations, distortion. And give maximum clarity. It is an ideal choice for Aligners, Retainers.