:1) Speed bumps can be installed
on the surface of asphalt roads and concrete roads.
2) To improve life span ,the road
must be smooth.After drilling,clean up the holes and remove the
dust,oil and debris from the holes.Using the special adhesive,put
the bottom of the bump to the surface of the road
3) For A type road bumps,use a
ateel bar or PVC pipe to link them up from the middle holes in
order to strengthen the power of force resistance.
4) The fixer and the hole must be
matched in size
5) Fixer for asphalt
roads:expansive screw(standard parts,the customer can easily
purchase on local market);fixer for concrete roads:bolt(standard
parts, the customer can easily purchase on
