HEIDENHAIN has branches and companies in 49 countries, which can be regarded as a high-quality standard. HEIDENHAIN is certified by ISO 9001 quality system model and authorized as a German Calibration Service (DKD) inspection station for the length and angle of the unit. As long as the product's service life and recyclable design are concerned, on the one hand, careful use of resources and optimization of energy consumption are prerequisites for the environmental declaration, which is in compliance with the ISO 14001 series standard. HEIDENHAIN develops and produces linear scales, angular encoders, rotary encoders, digital readouts, and numerical control systems. HEIDENHAIN's products are widely used in machine tools, automation machines, especially in the semiconductor and electronics manufacturing industries. HEIDENHAIN's products are the guarantee for the efficient and effective work of machine tools and large equipment. Since HEIDENHAIN was rebuilt in Traunreut, Germany in 1948, it has delivered more than 5 million linear scales, 11 million rotary encoders and angular encoders, 460,000 digital readout devices, and nearly 235,000 TNC numerical control systems.