The technology is primarily categorized into five generations:
-First-generation dyeing film (susceptible to fading, poor thermal insulation);
-Second-generation metallic reflective film (improved thermal insulation but high reflectivity);
-Third-generation heat-absorbing film (excellent UV shielding capability but potential chemical volatilization risk);
-Fourth-generation intelligent spectral-selective film (developed using magnetron sputtering technology, offering high thermal insulation and high light transmittance);
-Fifth-generation multilayer magnetron sputtering/nano-ceramic composite film (provides optimal overall performance and eliminates signal interference).
