Douai is designed and manufactured using high-quality material and the latest techniques in compliance with industry standards. It is typically used in a heat pump and refrigeration cycle
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The design of Douai is never out of date. It has been exported to USA, Italy, Germany, France, Poland, South Korea, etc
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The design and material selection processes of Douai are strictly controlled. It has been exported to USA, Italy, Germany, France, Poland, South Korea, etc
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Douai leads in design and technology. It meets global quality standards manufactured by ISO9000 certified factory
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The manufacturing process of Douai is safe and reliable. Its heat exchangers, pipes and components are selected to reduce the amount of refrigerant in the system without reducing energy efficiency
d******n
A rigorous quality control process ensures zero defects and consistent quality. It has zero Ozone layer depleting properties