Dotech Inc.

South Korea (Republic Of Korea) hosts Dotech Inc., which lists 47 active products across several electrical and industrial control categories. The catalogue includes multiple refrigeration controllers, HVAC controllers, heat pump controllers, digital temperature and pressure controllers, various transmitters and sensors, as well as expansion valve drivers and electronic sirens, each identified by HS‑code families such as 9025, 9026, 8537, 8481 and 9032. The product set reflects a focus on temperature and pressure regulation equipment used in refrigeration, air‑conditioning, and process control applications. Dotech’s listings also cover related electric components like USB‑to‑RS485 converters and pressure switches, showing a breadth within the broader electric components segment.

The supplied HS‑code details indicate compliance with standard customs classifications for measurement and control instruments: 9025.19 for temperature transmitters, 9026.20 for pressure transmitters, 8537.10 for electronic expansion valve drivers, and 8481.20 for electronic expansion valves. Materials noted include stainless‑steel diaphragms, FR4 PCBs, and various polymer housings, which align with typical industrial‑grade specifications. The catalogue therefore maps directly onto widely used control‑device families in the global HVAC and refrigeration supply chain.

Dotech Inc.’s catalogue lists concrete items such as a Multiple Racks Refrigeration Controller, Air Source Heat Pump Controller, Universal Intelligent HVAC Controller, and a series of digital temperature and pressure controllers. Specific transmitters - pressure (HS 9026.20) with 316L stainless‑steel diaphragms, temperature (HS 9025.19) with 304 stainless housings, and differential pressure transmitters - are also detailed, together with electronic expansion valve drivers (HS 8537.10) built on FR4 PCBs. In the broader market, temperature controllers are typically offered in IEC 60730‑1 or IEC 61851 grades, with accuracy ranges of ±0.1 °C to ±0.5 °C and input ranges from - 40 °C to +150 °C. Pressure transmitters for industrial use often meet IEC 60770‑4, providing pressure ranges from 0.1 bar to 100 bar and output signals of 4‑20 mA or 0‑10 V. Expansion valve drivers and electronic expansion valves are generally classified under IEC 60335‑2‑13 and are expected to handle refrigerant flow rates up to 30 kg/h with response times under 200 ms. Typical packaging for these devices includes anti‑static poly‑bags inside corrugated boxes sized for 20‑ft or 40‑ft containers, with moisture‑resistant liners for overseas shipment.