Micro Trenching Machines

the main idea & specifications for the project is
1.to make a micro-trench in flexible or non-flexible roads or footways in order to install micro-ducts for a new optic-fiber network.
2. blow optical fiber in through these micro-ducts.
here is the specifications we’re building our project on so far:
1.primary duct od/id range from 10/8mm to 12/10mm enough to suite from 96 to 144 core.
2.air blown cable diameter range from 6.8mm to 8.0mm.
3.number of primary ducts in one micro-duct is