| 2131 | Solvent Products | Company Product |
| 2132 | Solvent Recovery Equipment | Company Product |
| 2133 | Solvent & Removers | Company Product |
| 2134 | Solvent Sprayer | Company Product |
| 2135 | Solventless or Waterless Hand Cleaners | Company Product |
| 2136 | Solvents | Company Product |
| 2137 | Sonic Coring | Company Product |
| 2138 | Sonic Coring Method | Company Product |
| 2139 | Sonic Coring Test | Company Product |
| 2140 | Sonic Echo | Company Product |
| 2141 | Sorbitol | Company Product |
| 2142 | Sound Analysers | Company Product |
| 2143 | Sound Attenuators | Company Product |
| 2144 | Sound Barrier | Company Product |
| 2145 | Sound Barrier Sheet | Company Product |
| 2146 | Sound Control Structures & Equipment | Company Product |
| 2147 | Sound Dampening Materials | Company Product |
| 2148 | Sound Damping Panels | Company Product |
| 2149 | Sound Equipment Rental | Company Product |
| 2150 | Sound Floors | Company Product |
| 2151 | Sound Horns | Company Product |
| 2152 | Sound Insulation Pads | Company Product |
| 2153 | Sound Level & Calibrator | Company Product |
| 2154 | Sound Level Meter | Company Product |
| 2155 | Sound Level Meters | Company Product |
| 2156 | Sound Measuring Instruments | Company Product |
| 2157 | Sound Meters | Company Product |
| 2158 | Sound Powered Telephones | Company Product |
| 2159 | Sound Recording | Company Product |
| 2160 | Sound Rental | Company Product |