Inteast United Company Limited founded in 1998, since its establishment, it have been engaged in the development and production of communications products. Since 2004, with the well-known domestic enterprises, we have to accomplish from the traditional products business in transition to the development of high-tech areas. We are the high-tech enterprises that integration voice communications security technology, computer information security technology's development, production and sales into one. The main direction of R & D and product management is voice communications security technology and products, computer information security technology and products. After four years of efforts, we have developed a number of voice communications security area products, include: Voice Guard Adaptor (Voice-Guard Model EP-880), voice partner (Tele-Safe Model EP-880P), Digital Encryption Telephone (Model EP-888). We have completed the product chain from analog to digital, from fixed-line phone to the development of voice encryption products.