As an experienced Lock Cylinder Manufacturer, safety stands as the core demand for residential and commercial door hardware, and lock cylinders serve as the core anti-theft barrier for all interior and fire doors. As a professional lock cylinder manufacturer, CHAOLANG delivers high-security, long-lasting lock cylinder solutions matched perfectly with our door handles and mortise lock bodies. We adopt solid brass and stainless steel raw materials with rigorous multi-round anti-prying, anti-drilling testing to guarantee stable security performance. Our full lineup includes 70mm/100mm mortise lock cylinders, double-sided half cylinders and UL-certified safety lock cores for villas, hotels and office projects. We support bespoke size, finish and key configuration ODM services, backed by automated production lines to guarantee punctual mass delivery. Our in-house R&D team optimizes internal anti-theft structures continuously to meet global building safety standards, your reliable one-stop lock cylinder supplier for all door matching projects.