Global well-known manufacturers: the United States Stryker, Germany STORZ, Japan Olympus. Second-tier brands: Snake, VOLF, Nordoff, MGB. national brands: Shenda, Shanghai Aohua.
The endoscope is a testing instrument that concentrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software and so on. One has an image sensor, optical lens, light source illumination, mechanical devices, etc. It can enter the stomach through the oral cavity or enter the body through other natural orifices. Using an endoscope it is possible to see lesions that cannot be visualized by X-rays, which makes it very useful for doctors. For example, with the help of an endoscope, a doctor can look at ulcers or tumors in the stomach and make the best treatment plan accordingly.