The product categories operated by Xi'an Ruixi Biotechnology Co., Ltd. include synthetic phospholipids, polymer polyethylene glycol derivatives, block copolymers, magnetic nanoparticles, nano gold and nano gold rods, near-infrared fluorescent dyes, reactive fluorescent dyes, fluorescently labeled dextran BSA and streptavidin, protein crosslinking agents, small molecule PEG derivatives, dot counting chemical products, dendritic polymers, cyclodextrin derivatives, macrocyclic ligands, fluorescent quantum dots, hyaluronic acid derivatives, graphene or graphene oxide, carbon nanotubes, fullerenes, silica and mesoporous silica, polymer microspheres, near-infrared fluorescent dyes, polystyrene microspheres, upconversion nanoluminescent particles, MRI magnetic resonance imaging products, fluorescent proteins and fluorescent probes, etc.