CHAOLANG Hardware is a professional one-stop door control hardware manufacturer offering full-dimensional OEM & ODM customization for global door factories and construction contractors. We provide all-round tailored solutions covering structure, material, forming, surface finishing, assembly and tracking service. Customizable patented concealed hinge structures, BAOSTEEL 304/316L stainless steel materials with ±0.1mm tight tolerance and precision shaping within ±0.05mm are available. Our in-house surface treatment workshop delivers hardware passing 120-hour salt spray test, paired with matched custom locksets. Equipped with intelligent flexible production lines and MES traceability system, we support mixed small-batch orders, real-time progress updates and cloud quality data sharing. Over 200 successful custom cases prove our reliable customized hinges, door locks and stoppers.















