| 121 | Underground Pipeline For Telecommunications | Company Product |
| 122 | Underground Storage Tanks | Company Product |
| 123 | Underground Tank Cleaning Services | Company Product |
| 124 | Underhood Additive | Company Product |
| 125 | Underhung Cranes | Company Product |
| 126 | Underwater Cameras | Company Product |
| 127 | Underwater Gear | Company Product |
| 128 | Underwater Hydraulic Tools | Company Product |
| 129 | Underwater Lights | Company Product |
| 130 | Underwater Ndt Services | Company Product |
| 131 | Underwater Photographers | Company Product |
| 132 | Underwater Services | Company Product |
| 133 | Underwater Welding Equipment | Company Product |
| 134 | Underwater Welding Services | Company Product |
| 135 | Uneven Skin | Company Product |
| 136 | Unicheck Valves | Company Product |
| 137 | Unidirectional Grating | Company Product |
| 138 | Unifoam Extruded Polystyrene Insulation | Company Product |
| 139 | Uniforms | Company Product |
| 140 | Uninterruptible Power Supplies | Company Product |
| 141 | Uninterruptible Power System Batteries | Company Product |
| 142 | Union Ball Valve & Quick Joint Coupling | Company Product |
| 143 | Union Bonnet Valves | Company Product |
| 144 | Union Connector | Company Product |
| 145 | Union Connectors | Company Product |
| 146 | Union Elbow | Company Product |
| 147 | Union Elbows | Company Product |
| 148 | Union Expansion Joints | Company Product |
| 149 | Union Rubber Expansion Joint | Company Product |
| 150 | Union Sockets | Company Product |