Guangzhou deep-fat development investment management Co., Ltd. is a professional elevator air conditioning systems, elevators and elevator intercom system wireless IC card system in the development, production and marketing of high-tech enterprise specialized elevator. Key products include lift air-conditioning, wireless elevator intercom, elevator IC card three series of nearly a dozen kinds of products, involving elevators, refrigeration, communications, the three major industries. Shenzhen development investment corporation is committed to supporting the elevator product research and development. Has been applied for more than ten related patents, access to five national patents. Part of the technology in a leading position, energy saving rate of up to 60%; Which wireless intercom system elevator domestic product to fill the gaps in industry technology and products.