Product lmprovement Services 

1,Confirm the data of lid need to upgrade like characteristics, weight, diameter,and material.

2,For the glass lining manhole, It can be installed directly if it has connection plate. Otherwise, we wouldlike to provide the steel hoops and stainless steel bolts.

3,After all of the confirmation, select the correct specification about the balancer in accordance with the data.

4, Cutting and installation.