Precision machinery is based on today's precision engineering, precision engineering is a subdiscipline of electrical engineering, software engineering, electronics engineering, mechanical engineering, and optical engineering concerned with designing machines, fixtures, and other structures that have exceptionally low tolerances, are repeatable, and are stable over time.

Now precision machinery is the mian role in modern industrial, machine tools, MEMS, NEMS, optoelectronics design, and many other fields.

KEYWORDS：MEMS, NEMS, optical,