SMC composite manhole cover has good impact resistance, bending strength, high abrasion resistance, high corrosion resistance, good damage safety, anti-aging, anti-noise, bulletproof, beautiful and durable, light weight, convenient installation, moderate price and medium characteristics , It has better technicality and practicality than similar products (such as cast iron, cement manhole cover, etc.), and at the same time, because of no reuse value, it fundamentally solves the problem of theft. The product has been applied in Shandong, Anhui, Henan, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Sichuan, Guangdong, Hainan and other provinces and municipalities, as well as African and Southeast Asian countries. The most ideal substitute!