Douai is strictly scrutinized and tested. It is required to test in terms of its cutting, stamping, extrusion, anodizing, and polishing quality and overall mechanical properties.
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The design of Douai is the application of various disciplines. They include mathematics, kinematics, statics, dynamics, mechanical technology of metals and engineering drawing. Its wear and tear resistance allow it to withstand the heavy use in daily life
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Douai has passed the following test. It has been tested in terms of statics, dynamics, material strength, vibration, reliability, fatigue, etc. The surface is applied with anti-fingerprint layer, which makes the fingerprint easily be removed
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Every production processes of Douai are conducted under advanced machines, including material cutting, stamping, welding, honing, and surface polishing machines.
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The check for Douai is strictly executed. All its components are thoroughly inspected for dimension specification and chemical composition. Its excellent strength can make it retain original shape at both very high and very low temperatures
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Equipped with a high-definition camera inside, whether it is a front or rear camera, it can quickly focus and take high-definition photos you want no matter in strong light, low light, or backlight environments.