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. The product is flame retardant, ensuring maximum safety
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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. The center of the product is highly consistent
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Douai undergoes the following production processes: the preparation of metal materials, cutting, welding, surface treatment, drying, and spraying. With a multi-layered polished surface, it ensures its durability and reliability
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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). The product can be available in customized sizes
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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. It is highly resistant to acid, alkali, and other chemical substances
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It has a complete life cycle and high performance. The product is guaranteed to be of easy connection