1. This model adopts full-disc wet braking device. When the pressure is released or stopped, it can brake immediately, which is more safe and reliable;
2. This model uses the motor as the power source, which is pollution-free and low energy consumption. The motor for plateau area can be installed in high altitude areas;
3. The electrical system of this model is designed to be waterproof and moisture-proof to adapt to high temperature and humidity conditions in the underground; 4. The retraction of this model's cable is controlled by the hydraulic cable reeling valve, which effectively protects the cable from excessive extension and extends its service life.
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