We supply burglarproof artistic manhole covers, gully tops and treegrilles which are made from composite material such as glass fiber, resin, quartz, corundum & so on. Our products are not made of iron; it will be not stolen and also good in load ability. Compared with traditional iron manhole cover, our products have advantages as follows: 1. Strictly manufactured according to ISO 9001: 2000 and EN124. 2. High load capacity (max. 40ton) 3. Contain no metal, no scrap value, so nobody will steal it. 4. Long service life (min. 30 years) 5. Well sealed, no noise pollution or rebound 6. Good wear and corrosion resistance, never rust 7. Special relief sculpture on surface with good decorative effect 8. Perfect design and rich colors individually. We are professional, we are sure our new products can enjoy good market in your city; please feel free to contact us if you have any questions.