? Not the Fortune 500, the Fortune 500 foreign companies are listed companies, Carl Zeiss is a group of companies controlled by their own group funds and is not a listed company, so it's not the Fortune 500.
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Carl Zeiss (Carl Zeiss) is a German company that manufactures optical systems, industrial measuring instruments and medical devices, and is a world-class manufacturer of camera lenses. The history of Carl Zeiss lenses began in 1890 with the invention of the astigmatism-compensating lens called Anastigmat. Since then, Carl Zeiss has made a name for itself as a traditional lens company in the field of optical equipment such as medical series, camera lenses, enlarging lenses, eyeglasses, and planetariums. Among them, the camera lenses have the advantages of sharp resolution, detailed depiction, uniform aperture, and hardened treatment of T* multilayer film emission. The Carl Zeiss Meditec range is rounded off by future technologies such as intraoperative radiotherapy. The company has ten locations worldwide and more than half of the company's nearly 3,000 employees are based outside Germany. Carl Zeiss is a leading global and international company in the field of optics and optoelectronics, providing products and services to customers in the fields of semiconductor technology, industrial optics, life sciences, medicine, ophthalmology and optics. In China, Carl Zeiss operates mainly in the fields of medical devices, eyeglass lenses, industrial measurements, semiconductor industrial equipment, electron microscopes, and microscope equipment. Carl Zeiss has a factory in Guangzhou that produces lenses for eyeglasses and sells Zeiss lenses, telescopes and astronomical demonstration systems through agents.? Technological development:
Technological progress cannot be achieved without the contribution of listed companies. Above reference: Baidu Encyclopedia-Carl Zeiss