This series applies specialized coatings to precisely control the wettability of the aluminum foil surface. Hydrophilic foil promotes rapid condensation water spreading and drainage, effectively reducing air resistance and frost accumulation to enhance heat exchange efficiency. Hydrophobic foil possesses strong water-repellent properties, ideal for high-humidity or condensation-prone environments, preventing performance degradation caused by water retention. Both types optimize drainage and contamination resistance in air conditioning systems according to specific application needs.