The SF-91X-100M Dual-Tether Water-Jet System is engineered specifically for façade cleaning and coating on curtain-wall buildings, replacing traditional “spider-men” and dramatically improving the efficiency and safety of maintaining high-rise structures, power plants, and chemical facilities. Its tethered design revolutionizes conventional water-tether endurance, eliminating short-flight battery constraints and delivering unlimited power for the critical last 100 m, enabling large-scale deployment that is both safe and highly efficient. We supply complete electric tether systems for all water-tether platforms, covering heights from 50 m to 300 m and power ratings from 12 kW to 60 kW to meet any owner’s requirements. P.S. Customers who already own drones and water pumps can purchase the electric tether power system alone (0–300 m, 12–60 kW) with our fully automatic cable reel-in/reel-out mechanism.