The "HG/T 3855-2006 Insulating Paint Film Preparative Law" applies to the preparation process of insulating paint films. This standard requires that insulating paints be applied to flat and smooth T2 copper sheets and samples of Miscellaneous materials to evaluate the physical and electrical performance of the paint film. The standard describes in detail the required materials and instrumentation, including the preparation requirements for copper sheets, the size specifications of capacitor paper I-10, and the Glass sheet, electrical yarn, decontamination powder, muriatic acid and toluene or Xylene-ethanol solvent used. Film preparation tools such as dipping tanks, drip drying racks, and necessary thermostatic ovens and drying ovens ensure film uniformity and Stability under standardized conditions.