PI25 is a 25μm pure polyimide (PI) film, made via polycondensation and imidization stretching. It features high temperature resistance, excellent electrical strength, low shrinkage and good dielectric properties. Supplied in rolls with neat edges, it’s ideal for high-performance electronic and industrial applications.

• Insulation material for high-temperature electronic components and circuit boards
• Base film for flexible printed circuits (FPC) and flexible flat cables (FFC)
• Thermal insulation and electrical protection for aerospace and automotive electronics
• Substrate for adhesive tapes and coating films in high-temperature working environments
• Insulation layer for motor, transformer and coil winding with high heat requirements
• Protective film for precision electronic devices during high-temperature processing

Sanfeng Win New Materials (Jiangsu) Co., Ltd. (Sanfeng Win), founded in 2010, is a private enterprise integrating R&D, production, and sales of adhesive products. With industry-leading coating technology and a professional R&D team, we specialize in high-temperature resistant tapes, optical protective films, new energy battery blue films, aerogel packaging hot-pressing films, photovoltaic perforated tapes, and backsheets. Our products are widely used in electronics, mobile phone screens, PCB, powder spraying, insulation, die-cutting, printing plastics, battery cell aluminum case wrapping, FPC, new energy, and photovoltaic industries. Equipped with precision coating equipment, a high-purification clean workshop, and a multi-functional composite precision coating production line, we provide customers with R&D, design solutions, and market application feedback, enabling independent mass production services to ensure product quality.