| 1861 | SeoJin Instech Level Controller SLIC-4P | |
| 1862 | SeoJin Instech Level Controller SLI-100U | |
| 1863 | SeoJin Instech Level Transmitter SDG-3000 | |
| 1864 | SeoJin Instech Level Transmitter SLA | |
| 1865 | SeoJin Instech Level Transmitter SMS | |
| 1866 | SeoJin Instech Level Transmitter SCAP-IV | |
| 1867 | SeoJin Instech Level Transmitter SLT | |
| 1868 | SeoJin Instech Level Transmitter SDT-420 | |
| 1869 | SeoJin Instech Level Transmitter SGL | |
| 1870 | SeoJin Instech Level Transmitter ST-600 | |
| 1871 | SeoJin Instech Level Switch SDS-3000 | |
| 1872 | SeoJin Instech Level Switch SC5/SB3 | |
| 1873 | SeoJin Instech Level Switch SPS/SR7 | |
| 1874 | SeoJin Instech Level Switch SCAP | |
| 1875 | SeoJin Instech Level Switch SRF | |
| 1876 | SeoJin Instech Level Switch SVL | |
| 1877 | SeoJin Instech Level Switch SPT/SPL | |
| 1878 | SeoJin Instech Level Switch SFP | |
| 1879 | SeoJin Instech Level Switch SMC-7 | |
| 1880 | SeoJin Instech Level Switch SMC | |
| 1881 | SeoJin Instech Level Switch SHM-200 | |
| 1882 | SeoJin Instech Level Switch SHM-100 | |
| 1883 | SeoJin Instech Level Switch SFM | |
| 1884 | SeoJin Instech Level Switch SFS-2 | |
| 1885 | SeoJin Instech Level Switch SF | |
| 1886 | SeoJin Instech Level Switch STT | |
| 1887 | SeoJin Instech Level Switch SH(SEC) | |
| 1888 | SeoJin Instech Level Switch SQ | |
| 1889 | SeoJin Instech Level Switch ST-POINTS | |
| 1890 | SeoJin Instech Level Switch SOL | |