IOTA 3922A is colorless or light‑yellow homogeneous liquid free of mechanical impurities, solid content 60±2%, viscosity ≥30000cp. It delivers outstanding heat resistance, flexibility, insulation and moisture‑proof properties. Low‑smoke, non‑toxic and carbon‑free, with good adhesion, cohesion and anchoring power, it outperforms similar foreign products. It is used for manufacturing fire‑resistant mica tapes and pressure‑sensitive tapes. Cured mica tapes stay dry, soft and non‑sticky with excellent weather, moisture and electrical insulation performance. As a fast‑drying binder, curing condition: 60‑90℃ for 1min, 120‑150℃ for 3min. Packed in sealed 200kg iron drums, stored at 0‑35℃ with 6‑month shelf life. Re‑inspection is allowed after expiry. Transport as flammable goods, high‑quality binder for electrical‑grade mica tapes.