Revolutionary development of Information Technology leads information society, sending industrial society to a back street of the 21st century. In the past, It was possible to compete with each other by only experience or plain information. However it is not possible in the present age. A sudden change, a keen competition and survival! That is our present business environment. A company can be competitive and an information-oriented society can be made by only the business strategy which is made from a quick, precise and pointed information. We need new business strategy under new business environment. When we establish a new business strategy, we need pointed end Information Technology. Information Technology that can cope with 21st century business environment speaking for uncertainty, variety, sudden change, swiftness and accuracy must equip productivity and point end evenly. Therefore, Seo-Chang electronic telecommunication corporation is trying hard always to be a best company that has the latest and best technology about PQM (Power Quality Management) which is based on next-generation .We will make every effort to create new IT technology world by the strong conviction that a new way of thinking make a new people and a new people can create new technology, also we will be with you always in order to be your helper. We&＃39;d like to express our heartfelt thanks to customers who visit our Seo-Chang electronic communication corporation.