Wotech (www.wotech.cn) specializes in domestic/ commercial pool heat pump, heat pump water heater, geothermal heat pump, drying heat pump, etc. With strict quality control system, its product quality is none to the second.

Pressure gauges are charged into nitrogen and tested for 72 hours. Notes keep the pressure status. Those with poor quality are sent back to suppliers.

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Mother boards and electronic control displays are connected with electricity. Big range of electricity fluctuation goes through them. Those not qualified are easily found.

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Titanium heat exchangers are produced by WOTECH sub-company. They are charged into nitrogen for 48 hours to check if there is leakage.

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Evaporator welding.

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Pipe welding for heat exchangers.

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Wiring check. Each light bulb stands for the main components : fan motor, compressor, 4-way valve, etc. Bulbs are on only when the wiring is correct.

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