We are not just door control manufacturers, but trusted long-term partners for door manufacturers and builders.
Founded in 2001, CHAOLANG is a leading manufacturer of door hinge industry technology. The company currently has a plant area of 10000+ square meters.and currently mainly produces stainless steel hinges, copper hinges, oil-freehinges, door lock and door stopper.
Covering mold development, automated stamping, auto polishing and full-automatic assembly, we implement complete in-house manufacturing processes. We supply high-quality door hardware and all-round supporting services as an integrated manufacturer of R&D, production and global distribution.
R&D Team
CHAOLANG owns a professional in-house R&D team specialized in structural design, appearance development and process optimization. Focusing on door hardware innovation, we upgrade silent structures, concealed designs and anti-corrosion finishes based on market demands and user pain points. With independent patented technologies, we deliver differentiated hardware to strengthen clients’ market competitiveness and support sustainable brand growth.
Production Team
Our production team consists of senior technicians and professional QC managers, mastering the entire manufacturing process from mold development, automated stamping and precision polishing to finished assembly. Following ISO quality and environmental standards, they conduct multi-stage inspections and standardize automated production. Adhering to precision manufacturing, the team guarantees stable quality, fast lead time for bulk orders and customized project solutions.
Business Team
CHAOLANG’s global business team is familiar with regional market rules and hardware access standards worldwide. We provide one-stop procurement and customized solutions for global distributors, door factories and engineering clients. Covering demand analysis, product matching, quotation and after-sales technical support, our team solves clients’ problems efficiently and builds long-term win-win strategic partnerships with flexible cooperation models.
Our pursuit of superior craftsmanship has won us deep trust from renowned enterprises worldwide. We maintain long-term strategic partnerships with leading domestic brands including Oppein and Evergrande, and have also become an approved supplier for global hardware giant ASSA ABLOY.
Up to now, our products are sold to more than 20 countries and regions across Southeast Asia, the Middle East and beyond. Looking ahead, we will keep optimizing our cooperation models and provide flexible, diversified solutions to join hands with global clients for mutual success.
Ethical & Sustainable Production
We comply with global ethical labor standards and place employee safety and well-being at the forefront. Fully prepared for third-party social audits, we support clients’ ethical sourcing needs for global sales.
Environmentally responsible manufacturing defines our production philosophy. Our certified surface treatment factory realizes standardized sewage disposal. We reduce waste via optimized product design and recycle 100% of metal scraps, achieving circular, low-carbon and sustainable hardware manufacturing.
Contact Person: Mr.LIU
Phone: +86 18022188333
E-mail: zschaolang@outlook.com
E-mail: chaolang188@gmail.com