TopW Window Film includes constant-color OEM film, TPU color-changing film, durable heat-rejection film, titanium oxide ceramic, carbon, nanoceramic, 5G high-transparency hot-melt and metal-sputtered films. Product pages describe nano-ceramic, nickel-chromium alloy and multilayer precious-metal sputtering constructions, with features related to heat insulation, UV protection, light transmission, clarity and signal compatibility.