Insulating sleeves are widely used in the automotive industry and are a crucial component in ensuring the safe and reliable operation of vehicle electrical systems. In traditional fuel-powered vehicles, they protect wires from high temperatures, oil contamination, and long-term vibration in engine compartments, transmissions, and wiring harness assemblies. In new energy vehicles, they play a key role in insulating and flame-retardant protection in battery packs, drive motors, and high-voltage connection systems, meeting the stringent requirements posed by high voltage and large currents. Zhengtong Insulation provides insulation material solutions that are resistant to high and low temperatures, flame retardant, oil-resistant, and corrosion-resistant, effectively enhancing the stability and durability of automotive electrical systems under complex working conditions.