### Product Name: Mine-used Polyurethane/Nylon/Rubber Monkey Car Wheel Liners
### Product Positioning:
They are core supporting components for mine overhead passenger devices (monkey cars), and are special wear-resistant bushings for rope support wheels, rope pressing wheels, and turning wheels.

### I. Core Advantages
#### 1. Multiple materials available, suitable for all working conditions
- **Polyurethane wheel liners**: Made from imported cast polyurethane raw materials, the wear coefficient is 30% higher than that of traditional rubber. They are resistant to impact and tearing, do not become brittle in low-temperature environments (-40°C), and do not deform at high temperatures (80°C). They are suitable for heavy-load and high-frequency use in main haulage roadways.
- **MC nylon wheel liners**: Injection-molded from high-strength nylon, they have strong self-lubricating properties and a low friction coefficient. They can effectively protect the steel wire ropes and reduce operating noise. They are suitable for easily worn parts such as slope change points and turning sections.
- **Rubber wheel liners**: Featuring a high-elasticity buffer design, they have good shock absorption effects and are cost-effective. They are suitable for use in light-load and low-speed auxiliary roadways.
#### 2. Safe and compliant, specially designed for coal mines
All products support flame-retardant and anti-static customization, meet the requirements of coal mine safety regulations, and can provide MA certification test reports. They can be safely used in high-gas roadways and complex underground environments, eliminating potential safety hazards at the root.
#### 3. Exquisite design, easy to install and durable
- They are precisely molded by dies, with a dimensional error ≤ 0.5mm. They fit perfectly with rope support wheels and rope pressing wheels, and can be directly snapped on without additional grinding during installation.
- Some models have a stepped positioning design, whic