Douai is manufactured by means of both machines and manual labor. Especially some detailed and sophisticated parts or workmanship, are manually finished by our professional workers who have years of experience in handmade crafts. This product allows for the perfect customized fit
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Before production, the electrode materials of Douai are carefully handled to prevent them from coming into contact with each other. Because contamination between the anode and cathode materials will ruin the battery. It has been widely used for skiing, hiking, hunting, shoveling snow, and other work or activities in a cold environment
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Douai undergoes the following production processes: the preparation of metal materials, cutting, welding, surface treatment, drying, and spraying. This product provides all-day heat on a single charge
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Douai is strictly inspected during production. It is checked on its appearance (porosity, scratches, dents or holes, paint runs, blisters, debris contamination). This product is the perfect blend of fashion and utility
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The design of Douai is based on the combined theories of the law of seals and the principles of applied science. Its heating panels are made with ultra-fine carbon fiber, which ensures maximum safety
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It has a complete life cycle and high performance. The green, blue, or red LED light clearly shows the selected setting for easy-to-understand use