ELISA PLATE refers to the purity, concentration, and ratio of antigens, antibodies, labeled antibodies, or antigens involved in immunological reactions in Enzyme Linked Immunoassay; The type, concentration, and ionic strength of the buffer solution, pH value, reaction temperature, time, and other conditions play a key role.

Medical catheter is a slender hollow medical tool mainly used to deliver liquids, gases, or guide other instruments into specific parts of the human body. If the human body is compared to a complex city, ducts are like "miniature plumbers" shuttling through it, helping doctors complete tasks such as diagnosis, treatment, and life support. These seemingly simple tubes, in the operating room ICU、 Dialysis centers and other medical settings play an irreplaceable role, helping patients to eliminate accumulated body fluids, accurately delivering drugs to lesions, and building life-saving "life channels" in blood vessels.