UNITED STATES OF AMERICA
The diameter of a human hair is approximately 0.05 - 0.07mm. ±0.01mm is one fifth of the thickness of a hair. This level of precision requires high-precision CNC equipment in conjunction with an imported coordinate measuring machine (CMM) to be achieved stably. Data disclosed on justway's official website: The precision can reach ±0.01mm, and it is equipped with an imported CMM (Source: Official Website)