PEM is a fastener brand under the Penn Engineering Group in the United States, and it is also a recognized major brand in the entire metal sheet fastener industry. It is the inventor of fastener riveting technology and a leading enterprise in the industry. PennEnginering is a company specializing in providing fastening solutions, with the Chinese name Binco. Founded in 1942, it is a global multinational enterprise headquartered in Pennsylvania, USA. Its main business is the production of self-locking fasteners and precision parts for the automotive, aviation, and electronic industries. It is a global pioneer and leader in self-locking technology, with world-class innovation capabilities and production processes.