Qingdao Changlong Metal Product Co. Ltd. is a company that provides Laser cutting, Automation, Manufacturing engineering and more. Qingdao Changlong Metal Product Co. Ltd. is headquartered in China Shandong Sheng. Qingdao Changlong Metal Product Co. Ltd. was founded in 2002. Qingdao Changlong Metal Product Co. Ltd. has a total of 30 patents