About usWelcome to BEIJING XIHENG TECHNOLOGY(KDS INSTRUEMNT) an ISO 9001:2008 certified company started our operations in the year 1998 located in beijing,China. which is the leading manufacturers, suppliers, exporters and importers of a wide range of high quality pressure and temperature calibration Instruments.For many years,BEIJING XIHENG TECHNOLOGY(KDS INSTRUEMNT) has successfully developed digital pressure datalogger,digital pressure test gauges, digital pressure calibrators, pressure test ...