Dalian cary chi technology Co., LTD., big to visit Andrew chi Reese's science and technology development Co., LTD, KaiChi rui xin (dalian) instrument development Co., LTD. Krcfis (Kecrichen blunt line and senser) company (hereinafter referred to as KRC) is Germany to fluid measurement, liquid level measurement and sensing research professional orgnaization, have good higher learning atmosphere and Europe's top industrial laboratories, And for the world famous of large-scale industrial enterprises to provide technical support. In fluid engineering major results have ultrasonic analog signal DSP digital conversion and cross correlation technology development and application, the multifrequency many pathways ultrasonic treatment technology and many flow separation and partial measuring techni..