It manufactures with trained technologies and industrial administration. Products are tested seriously and scientifically. It is small, light and easy to install. It reacts quickly and measure precisely, corresponding to all the places of ball speed control and shells. It is equipped with computer and interface capable of measuring the velocity of shells of the soul precisely and successively. His field of speed control is from 200 to 4000 meters per second. The degree of precision to measure is to measure and calibrate national standards. The basic level is Pack per second. If it is necessary, we can lessen the error to 0.1 per second. It is also able to measure the value of speed once on 0.001 second. The output and the display of the result are all by computer interface.