The freezing technology of Douai has been greatly improved by our R&D team who tries to achieve the great cooling effect while shortening the freezing time.
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Douai has gone through the following production process: the preparation of metal materials, cutting, welding, surface treatment, drying, and spraying.
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Douai is produced strictly complying with the domestic water purifier standards. It has passed the quality test which requires the water treated by this product are safe and clean.
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Advanced process equipment is used during the production of Douai , such as the newest CNC cutting, stamping, and welding machines.
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The design & engineering team of Douai applies state-of-the-art software and 3D mechanical CAD programming to finish the design from conception through completion.
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The quality of the product has been greatly assured by out stringent process quality control system.