The quality and performance characteristics of Douai are ensured through random sampling. Such hand tests as frame color, finish and construction, lens color and surface quality are carried out in this process. The product features high- and low-temperature resistance
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All technology steps ensure synergies of Douai . From wafer coating through to the manufacturing and encapsulation of microchips and the high-precision positioning of optical components (
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Douai is made by optical, mechanical, and quality assurance engineers. Their expertise in a wide range of imaging applications and technologies ensures the quality of this product. The product is extremely miniaturized, occupying little space
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In Douai manufacturing, we use mechanical joining and connection technology. We also use injection molding with fully and partially automated processes, as well as manual processes. It has a fast speed for charging and discharging
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Douai has undergone many laboratory tests prior to mass production, such as dimensional stability at high temperatures, bridge deformation and lens retention, lens size, thickness and curvature. The product is extremely miniaturized, occupying little space
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Shanghai Douai Lingerie Co., Ltd. Through scientific planning and reasonable management and control of raw material purchase costs, transportation costs, human resource costs, etc., the produced are more cost-effective under the premise of no change in performance, quality, and quality.