Dental pressure cooker medical device three certificates is which three certificates, what are the specific requirements?

The three certificates of the laboratory instrument reagent is the production license, medical device registration certificate or national food and drug approval number, business license. Reagent (reagent), also known as biochemical reagents or test drugs. Mainly to achieve chemical reactions, analytical assays, research experiments, teaching experiments, chemical formulations using pure chemicals. Generally divided into general purpose reagents, high purity reagents, analytical reagents, instrumental analytical reagents, clinical diagnostic reagents, biochemical reagents, inorganic ion chromogenic reagents.