1. Beautiful appearance
2. Quite a good drainage: the leakage area is 83.3 percent, more than twice that of cast iron.
3. Strong anti-rust, maintenance-free and replacement.
4. Anti-theft design: cover and frame with hinge connection, anti-theft, easy to open.
5. Save money: large span, heavy load, lower than cast iron price and save the cost of stolen or crushed replacement.
6. Strong toughness: strength and toughness are much higher than cast iron, can be used in docks, airports, and other large spans and heavy load environments.
7. A variety of specifications: to meet the needs of different environments, loads, spans, sizes and shapes.
