Beijing Branch of the Scientific Instrument Co., Ltd. formerly known as the Chinese Academy of Sciences Beijing Scientific Instrument Development Center (formerly Scientific Instrument Factory of Chinese Academy of Sciences), was founded in 1958. KYKY products are mainly: series of molecular pumps, ion pumps and other products obtained by ultra-high vacuum; Series helium mass spectrometer leak detectors and other vacuum testing products; scanning electron microscope and other analytical instruments; ultra-high vacuum environment simulation equipment, coating production lines and other vacuum Application equipment; Scanning electron microscope and other analytical instruments. Products are widely used in basic scientific research, high-tech industries, high-end equipment manufacturing, new energy materials, energy saving and environmental protection and other fields.