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Zhenyu is designed in a comprehensive way. Before production, it will be designed using CAD to create its front view, lateral view, and the anatomy view in the middle, hence, its whole structure is showed clearly. Its theft-resistant back locking knob offers higher security

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The quality of Zhenyu is guaranteed at the very beginning. Exhaustive quality control testing is done for all its materials to ensure that any inferior component would be replaced long before production begins. Made of high-density metal, it features high hardness

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Zhenyu is manufactured to meet user requirement specification. Its electric components and the housing have gone through heat treating, stamping, laser cutting, and surface treating. Free of the twisting to open the door, its handle is easy to grasp

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Quality control and inspection are essential before Zhenyu shipment. Detection is carried out to check whether the product contains non-standard or non-compliant components which are illicit in the phone accessory industry. This product is easy to install without a specialized person

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Zhenyu follows the complete design processes. Its design processes include frame design, drive systems design, mechanisms design, bearing selection, and sizing. Its deadbolt is less prone to prying

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Zhenyu is manufactured to meet with relevant requirements. Its has been inspected or tested using different ways in terms of pins in wires, the performance of capacitor and resistor, stability of power source, and voltage endurance. Its surface treated with plating enables its rust resistance

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Its quality highly meets the international indicators after quality inspections. Processed by double-row-pin technology, its keyway provides extremely security

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