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Homefong is a leading developer and manufacturer in Video Door Phone Smart System Since 2007,with 12 years history. As one of the largest OEM manufacturer of smart home industry in China, Homefong offers you video door phone system, hybrid DVRs, NVRs, standalone DVRs, digital video servers, compression cards, high-definition IP cameras, and speed domes. These products are used in more than 100 countries, and have been used to secure various security applications around the world.