Shenzhen xixun Technology Co., Ltd. is specialized in developing, man- ufacturing, marketing and providing after service of broadband, narrowband network access products. The company consists of R&D, marketing including support, project department and after survice departmrnt, manufactory, quality department,materiel control department, buying department,abroad department admini- stration, F&A departments and factory, All of the technique . The R&D team has worked out Integrated Services Access Network equipments, transmission equipments, application com- ponents and terminal equipments which have be applied in China Telecom, CNC, China Mobile, China Unicom , China Power, Railway and large corporation on large scale.