1. Safety: No jumping, tilting, or shifting; no noise, safe and reliable.

2. High Load-bearing Capacity: Significantly exceeds that of other products, with high load-bearing pressure, preventing accidents such as breakage and vehicle fall.

3. Longevity: Corrosion-resistant, pollution-free, and maintenance-free, with a lifespan of over 50 years.

4. Security: Standard anti-theft design, new anti-theft design, the manhole cover and ring are connected with high-tensile bolts, integrated design.

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