Resistive touchscreen surface material is PET (polyethylene terephthalate, also called polyester). Capacitive touchscreen surface material is tempered glass. Both surfaces can be cleaned with the following method. Using a cleaning solution of 75% alcohol or 1:100 diluted bleach, spray the solution on a dry cloth. Gently wipe the HMI’s screen. Note: Avoid spraying the solution… Read More How to clean an HMI screen