We can supply many kinds of GRP/FRP/Composite Manhole Cover and Rain-grating, our products have following advantages: 1. Strictly manufactured according to ISO 9001: 2000 and EN124. 2. High load capacity 3. Free-design 4. Long service life 5. Well sealed, no noise pollution or rebound 6. No any jangle when cars pass through. 7. Good wear and corrosion resistance.