we are established company in 1999 to enter into telecommunication field and many years of experiences in business enable us to expand our business world wide. In 2005 we stretch to international market and we mainly export our latest products, YC-9000K/Xi series of telephone switching system. This system adopts digit-only technique and it can meet your specific requirments in telecommunication.Hope to set long term biz cooperation relationship with customers from all over the world. Best regards from all members of Shanghai Daochun International Trade Co., Ltd