Douai is designed and manufactured using high-quality material and the latest techniques in compliance with industry standards. It is leak-tight manufactured with advanced joining techniques
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The design of Douai is never out of date. It is granted with certificates such as SGS, VDE, TUV, and UL
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The design and material selection processes of Douai are strictly controlled. It is granted with certificates such as SGS, VDE, TUV, and UL
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Douai leads in design and technology. It has been exported to USA, Italy, Germany, France, Poland, South Korea, etc
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The manufacturing process of Douai is safe and reliable. It has many industrial and commercial applications
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A rigorous quality control process ensures zero defects and consistent quality. Its heat exchangers, pipes and components are selected to reduce the amount of refrigerant in the system without reducing energy efficiency