Directional drilling rigs, auger boring machines, directional drilling, directional drilling fluids, drill pipes, drilling tools, drill bits, pipe jacking machines, mud solid control systems, borehole locating, logging and guidance instruments, conduits, pipe tunneling technology, drain pipes, cable avoidance tools, cutting machines, CCTV inspection systems, power insertion equipment, coatings, coil transport vehicles, concrete pipe descaling, detection equipment, digital mapping, drilling fluids/muds, gas detection, geological survey, grouting, hand tools, high-pressure cleaners/jetters, lifting equipment, pipe bursting equipment, pipe splitting technology, pipe lining, locating equipment, cleaning equipment

Protective sleeves, thrust units, hydro-jet cutting, remote-controlled tunneling, resin injection rehabilitation, risk assessment, safety equipment, jetting equipment, welding, leak detection, sealants, detectors, sewer cleaning, sewer lining, sewer maintenance, rehabilitation equipment, shafts/caissons, sonar, surveying equipment, tunnel lining, underground locating equipment; small-diameter tunnels, mainline connection equipment, winches, bentonite, small-diameter pipe jacking, etc.