PU 1030 series is a one-component and fast air-drying conformal coating material based on modified polyurethane resin. Any aromatic solvents such as xylene, toluene are not concluded in the varnish. The cured coating film has good performances in temperature resistance, humidity-heat tolerance, salt endurance, excellent adhesion, etc. PU 1030 series can be applied to the anti-corrosion insulation of PCBA for all kinds of environments, especially suitable for high stable anti-corrosion fields.