In addition to the continuity characteristics of capacitors that are "separated by direct current and direct current", single stone capacitors also have the characteristics of small size, large specific capacitance, long service life, high reliability, and suitability for surface installation. With the rapid development of the world electronics industry, as a fundamental component of the electronics industry, Unistone capacitors have also developed at an astonishing speed, increasing at a rate of 10% to 15% annually. The demand for single chip capacitors in the world is over 200 billion units, with 70% coming from Japan, followed by Europe, America, and Southeast Asia (including China). With the improvement of reliability and integration of chip capacity products, their scope of use is becoming wider and wider, and they are widely used in various military and civilian electronic machines and equipment. Such as computers, telephones, program-controlled switches, precision testing instruments, radar communication, etc