H03rn-F H05rn-F H07rn-F 3X1.5 3X2.5 3X3.5mm2 High Flexible Flat Rubber Submersible Pump Cable Pure Copper Core Waterproof Cable. High Flexibility & Bending Resistance: Designed for frequent up/down movements with small bending radius to prevent breakage. Space Saving Flat Design: Thin cross-section and wide shape allow flexible arrangement in narrow elevator shafts. Reduced Friction & Wear: Uniform contact area with guide rails minimizes friction, extending cable service life. Strong Anti-Interference: High-quality shielding materials ensure stable signal transmission during high-speed operation. Multi-Functional Integration: Integrates power, control, and communication lines into a single cable to simplify wiring. High Safety Standards: Made with fireproof and explosion-proof materials for improved emergency safety. Environmental Resistance: Resists high temperatures, corrosion, oil, and abrasion for stable long-term performance. Pure Copper Core: Ensures high conductivity and reliability for power and signal transmission.