we, techpac company is a dynamic it solution provider based in china and hong kong. we are also a manufacturer of quality yet low cost data communications access equipment – the vicom series of iso 9001 certified wan access connectivity products. we manufacture and sell quality wan access products: baseband / xdsl / voice band modems, pdh/pcm/tdm mux, fiber optic modems and transceivers, digital cross connect, tdmoverip, voip products and all sorts of interface converters (v.24/v.35/x.21/rs449/lan etc) for data communications equipment