Shanghai Sunny Elevator ASSembly Co.,Ltd, found in 1992, is a 21-year professional manufacturer specialiaing in designing and producing Opto-Electro-Mechanical products. Our main products are elector light curtains,photoelectric switches and elevator buttons. The company has a complete set of equipment andinstruments in terms of mechanism, sheetmetal,plastics,moulding,electric appliance,together with SMTl line, which are respectively used in key parts of production, assembling, and qualuty ...