| Code and Description | Brand Vietnam |
| SOL - Mini Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| ST-POINTS - Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SQ - Quick Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SH(SEC) - Electrode Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| STT - Tilt Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SF - Liquid Flow Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SFS-2 - Unification Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SFM - Mini Magnetic Float type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SHM-100 - Horizontal Magnetic Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SHM-2000 - Vertical Magnetic Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SMC - Displacement Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SMC-7 Series - Vertical Float Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SFP - Pneumatic Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SPT/SPL - Pressure Type Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SVL - Reliable Vibration Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SRF - Radio Frequency Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SCAP - Capacitance Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SPS / SR7 - Paddle Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SC5 / SB3 - Piston Type Level Switch | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SDS-3000 - Electrode Type Drum Level Switching System | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| ST-600 - Float Type Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SGL - Gear Type Liquid Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SDT-420 - Torque Tube, Displacement Type Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SLT - Tank Level Gauge | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SCAP-IV - Capacitance Type Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SMS - Magnetostrictive Type Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SLA - Air Purge Type Level Transmitter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SDG-3000 - Electrode Type Drum Level Gauging System | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SLI-100U - Level Controller | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SLIC-4P - Level Controller | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SEC-3U/5U - Level Controller | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SLC-100U / SLCA-HL - Level Controller | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SQ-2U/4U - Level Controller | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SLA-4P / SMA-4P - Level Controller | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SAP-810 - Averaging Pitot Tube | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| MPA - MPA(Multi Point Averaging) Flowmeter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SOP - Orifice Plate | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SCF - Cone Type Flowmeter | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SG - Sight glass | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |
| SMF - MAGNETIC FLOW METER | Seojin Instech Level Switch Vietnam, Seojin Instech Level Switch STC VietNam |




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