0.9mm thick aluminium with 0.1mm enclosed retroreflective lens sheeting on surface; Excellent levels of resistance to chemicals, oils, salt and temperature; High tensile strength PET top layerThis system allows you to make up your own Hazchem or multi-load placard, produced to your exact specifications; To order: Select the panel you require, specifying the letters from P, R, S, T, W, X, Z and E and numbers from 0-9; Select your hazard warning symbol; Specify the ?SPECIALIST ADVICE? you wish to display