BMP71 Continuous Metallized Polyester Asset Tracking Labels. Metallized Polyester (B-428) labels are designed for applications that use barcodes, alphanumeric, graphic symbols and logos and require nameplate-like quality. Matte, light grey finish gives labels a rating and serial plate appearance. Labels are designed to withstand numerous solvents and variable temperatures when applied to various surfaces. UL approved; CSA accepted. Service temperature of -40 to 248 °F (-40 to 120 °C). A ribbon is required to print this material. Use Part Number M71-R4300.