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Adjustable Interlock Crescent Window Lock Factory Supply High Quality. Customizable Color Options: Available in White, Black, or any other custom colors to match your design. 5-Year Warranty Coverage: Comprehensive 5-year warranty with online technical support included. Complete Hardware Matching: Provides full matching sets based on specific window types and profile systems. High-Quality Materials: Constructed from aluminum alloy, zinc alloy, and SS304 with powder coating finish. Fast Delivery Time: Average lead time within 15 workdays for both peak and off-peak seasons. Certified Manufacturer: ISO, CE, CNAS certified with own production line and professional QC team.