Yantai Crystal biotech Co., Ltd. is located in the beautiful coastal city of Yantai. It is an enterprise dedicated to the research and development, production, and downstream technology development of flow fluorescent dyes. Its products include natural phycobiliprotein series, tandem dye series, rhodamine series, and other flow fluorescent dyes. The company focuses on the research and development of various flow fluorescent dyes, providing services for diagnostic reagent production enterprises. The flow fluorescent dyes produced by the company are at the forefront of the world and aim to provide solutions for the development of fluorescent immune diagnostic reagents, enabling new life science research to be applied in the fields of scientific research and medical diagnosis.