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Xi an ruixi Biological Technology Co.,Ltd wasfounded in 2012 in china, Our company sells drug delivery and nano targetrelated R&D reagents, our products are phospholipid, polyethylene glycolderivatives, block copolymers, gold nanoparticles, magnetic nanoparticles,fluorescent dyes, microsphere. Our technical team comes from the University ofchina,they have strong academic background in chemistry, biology andnanotechnology.We strictly control the quality of products, and continue todevelop new products of high-tech.