We are SHENZHEN SHIDEAN TECHNOLOTY INDUSTRIES CO.,LTD, the leading designer and manufacturer of video intercom and audio intercom system in China.All of our products are CE certified and produced strictly under the control of the ISO9001 international quality system. With the excellent aftersales service, good quality and competitive price, our high value added products occupy the largest market share in China. On the world market, we actively take part in the international security products exhibition, and the quality of our "SHIDEAN" branded security products are acknoledged by the experts in the field around the world. Now, we are cooperating with the leading security product dealers in the world and our products are exported to more than 30 countries all over the world. Our main customers are: the C.F.I-Extel in France, the Lab-Tronik in Poland, the A&TV in Russia, the Zublin in Switzerland,etc. At the same time, we are the OEM supplier to the famous brand in South Korea. All these successful experiences owning to the excellent management and expertized R&D department which is capable of developing the most advanced security products.