Douai is usually tested to control the physicochemical and microbiological stability in order to meet the requirements of the beauty makeup industry. The product itself has a heat-resisting property
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The mechanical parts of Douai , mainly electrode current collector foils, tabs to take off the current, external terminals, the case, and seals, are specially designed to meet safety targets. The product is sealed and welded exquisitely
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The design of Douai is carried out by a team of professionals who keep innovative concepts in mind to make sure it can go with the service flow. Welded carefully, it is scratch-proof and won't hurt people
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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 is made to provide easy additional security for years to come
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Douai has been strictly tested for evaluating conformance to quality over various footwear parameters. These include visual, chemical and physical tests. It is less likely to leave dents on the product
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It is able to withstand large shock loads and works in harsh conditions. Its structure is finely processed and the impact capacity is enhanced by adding impact stabilizer. It has served over 2600 customers since its launch