Douai is usually tested to control the physicochemical and microbiological stability in order to meet the requirements of the beauty makeup industry. It is made to provide easy additional security for years to come
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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. It is granted with appearance design patents and utility model patents
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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. With a multi-layered polished surface, it ensures its durability and reliability
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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. The product is sealed and welded exquisitely
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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 is very easy to install and use