Douai is developed by our internal R&D team that always keeps up with the trend of the lighting industry. They have made great efforts to invent the different bulb materials that emit pure and effective light.
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The quality of Douai is tested. It has been tested for strength, ductility, impact resistance, hardness, and fracture toughness.
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Douai has been tested for quality. All its main components, including the gears, pistons, engines and other moving parts, are tested to meet our established standards.
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The quality test for Douai is strictly carried out. These tests include vibration and shock tests, noise tests, thermal shock tests, fatigue tests, and more.
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Douai has undergone different stages of production. These stages include pattern cutting, partial stitching, forming its shape, etc.
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The product features a rugged construction. Made of heavy-duty metals, it is able to withstand various kinds of elements such as shocks and vibration.