Linyi Ruili Hardware Co., Ltd. Is established by the executives and the core technicians of Shandong Double Hill Electronic Lock Co.,Ltd. Which is one of the "China's top 10 locks King".

Company is located in the Economic Development Zone of Linyi city in Shandong Province. The company is the exclusive supplier of the well-known BOUVET and SDH two companies in U.S.A, products distribute in high-grade market of North America, the Middle East and Asia. The company strictly implements the ISO 9001 quality management system, the anti-fire and anti theft Mortise is the only one UL listed in China.