Beijing Spake Technology Co., Ltd is one of the most professional manufacturers of calibration instruments in China with 24 years 'experience. We have been successfully manufactured Pressure/ Temperature calibration instruments such as high accuracy Digital Pressure Gauge, Pressure Calibrator, Pressure Calibration Comparator Pumps as well as Process Calibrator and Temperature Calibrator Dry Blocks. So far, "SPMK" brand calibration instruments have been used in over 100 countries worldwide and enjoy good reputation.