Changzhou Sanjia Aluminum Alloy Box Factory was founded in1997. It is a factory specializing in developing, designing and manufacturing aluminum cases. Our factory has the license to run export and import business,the production workshop area is 13000 m2, and through the ISO 9001 quality system certification. We are professional in manufacturing various aluminum cases, such as large flight cases, equipment cases, precision instrument cases, tool cases, briefcases, trolley cases, military cases, medical cases, presentation cases and quake proof models.