Hexin Technology Co., Ltd. was established in 1997, is one of major manufactory of data communication products and relative products in China, specializing in manufacture of RS232-RS485/RS422 Converter, Serial Device Server, RS232 to TTL converter , usb to serial converter, G.703 Balun Lan/BNC/Ethernet Adapter Converter, etc. Our products are famous in its&＃039; reliable quality, excellent performance meeting the international xxxxx series products of series communication and fiber-optical communication researched and developed by ourselves have been widely put into application of such fields as finance, post and telecommunications, public finance and tax, public security, railway, power and medical treatment etc. and praised by customers from all walks of life in society. Now, the product has been manufactured and put into market in scale and export to Europe, North America , South America , Middle East , Asia and Australia . We seriously declare to our honorable customers that we will devote on exploiting the new products and offering professional suggestions before you buy our products and perfect service after you buy it with all our heart and soul with reasonable price. We are looking forward to cooperating with you, and we are confident that our collaboration will bring high profit for both of us! http://*****