الوصف

1.Anti-theft, the materials FRP/GRP , SMC, DMC/BMC are not be used again. 2.Anti-corrosion, the materials FRP/GRP , SMC, DMC/BMC have high anti-corrosion. 3. Long use-age life (Not less than *0 years). 4.Lighter than cast iron manhole cover 5.Well sealled, no noise pollution or rebound 6.High load ability , strictly manufacture according to ISO***1:***0 EN**4 7 Specil relief sculpture on surface with good dicoractive effect. 8 eautify the environment; perfect design and the color can be changed as per environment and customer's requirment