1. What is Coil Coating? Coil coating is a specialized coating used to coat steel and aluminum surfaces, after the pre-coated coil is formed. Aluminum generally requires only a single coat, while galvanized steel and cold-rolled steel require a primer and topcoat.     2. Requirements for aluminum pastes for coil coatings: ① Common particle size: 8-10μm fine white and imitation electroplating, 20μm/40μm sparkling ② Coverage: Good coverage is required, and high white brightness is not particularly required ③ Cleanliness: Coil coatings are baked varnishes, so cleanliness requirements are high and must be free of impurities ④ Adhesion: Good adhesion is required, and pigments must not flake off     3. Recommended Products ① Based on customer requirements and user feedback, we recommend Fine white 3508, sparkling 5784, 5770, and 5760. ② For some coil coatings requiring exceptional weather resistance, we recommend using resin-coated aluminum silver paste.