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Why choose us?

The company is dedicated to the research, design, and manufacturing of AC and DC locomotive air-conditioning systems. For many years, we have worked closely with our customers to tailor high‑quality products and services that meet the specific requirements of diverse operating environments and vehicle types. Our newly manufactured and overhauled locomotive air-conditioning systems are now in service across all railway bureaus nationwide and at more than fifty local industrial and mining enterprises. In addition, our products are exported to numerous countries, including Kazakhstan, Turkmenistan, Iran, Indonesia, Gabon, and Vietnam.

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The TTK30N-12D is a top-mounted, slim‑profile air-conditioning unit designed for rail‑based applications, including work vehicles and railway rolling stock.

TTK30N-12D

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The TTK30I-5.0L is a top-mounted, in‑cab air-conditioning unit (with the unit concealed within the roof) and is suitable for export‑type locomotives.

TTK30I-5.0L

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TTK33J-18.7D is a multi‑split air-conditioning unit, suitable for railway engineering applications, including work vehicles and railcars.

TTK33J-18.7D

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DYJS230 This product is suitable for SS (Shaoshan) series vehicles or other models powered by the grid.

Air Conditioner Power Supply DYJS230

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DYHS223 is a variable-frequency air-conditioning unit power supply, suitable for SS (Shaoshan) series locomotives or other locomotive models powered by the grid.

Dedicated Power Supply for Inverter Air Conditioners DYHS223

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DYCD123 This product is a power supply for inverter air-conditioning units, suitable for DF (Dongfeng) and GK (industrial and mining series vehicles) models, as well as other vehicle types powered by generators.

Power Supply for Inverter Air Conditioners DYCD123

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DYND130 This product is suitable for DF (Dongfeng) and GK (Industrial & Mining) series vehicles, as well as other vehicle models powered by generators.

Air Conditioner Dedicated Power Supply DYND130

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The TTK33L-4.5D is a cabinet-type ducted air-conditioning unit, suitable for locomotives such as the Harmony HXD3C.

Air conditioning unit TTK33L-4.5D

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The TTK32K-4.7D is a roof-mounted air-conditioning unit, suitable for locomotives such as the Harmony HXD3 series.

Air conditioning unit TTK32K-4.7D

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This product is a roof-mounted air-conditioning unit, suitable for DF (Dongfeng), SS (Shaoshan), and GK (Industrial & Mining) series locomotives.

Air conditioning unit TTK30F-6.0D

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The TTK43M-6.0D is a cabinet-type ducted air-conditioning unit, suitable for locomotives such as the Harmony HXD1B.

Air conditioning unit TTK43M-6.0D

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