color
red/blue/green/gray/black/yellow
application
inspection wells of power,real estates,high-grade highways etc
sealing
use a seal to reduce noise
safety system
use lock with hinge to keep the cover stable on the road
inscription design
customized according to the client company name
logo design
customized according to the client company name
surface pattern design
according to the customers,but it is paid for the customers
round manhole cover material
smc composite