Nantong Lisi organic Chemicals Co.,Ltd.(Nangtong Lisi Chemical Auxiliaries Co.,Ltd) is a chemical enterprise specially producing fluorescent whitening agents(optical brighteners).It has 30-year-old production experiences with an production capacity of more than 30,000mt per year and the fluorescent whitening agents are available in over 30 varieties and find wide applications in such industries as those of dyeing & printing,detergent,paper-making,man-made fiber,plastic,artificial leather and coating materials,With an affiliated fluorescent whitening agent research institute specially engaged in research & development of fluorescent whitening agents and in application tests of new varieties of it,the plant thus has a rather strong capability in doing research,designing and development.In these years,it has developed tens of new type fluorescent whitening agents,their quality reached the standard of similar products made by foreign companies,because of high quality with low prices,they are widely accepted by customers from domestic and abroad.In recent years,the paper-making technology is being greatly developed and it is a symbol of modern excellent enterprises to produce extra-wideness,super high speed with super high whiteness paper.To meet super requirement of paper industries,we developed non-salt fluorescent whitening agent NT-3,RSB and FWN.We will insist on being oriented by technical science,warmly welcome knowledge men from all circles to cooperate with us hand in hand,developing new type fluorescent whitening agents,contributing to fast developing paper-making,detergent,plastic and synthetic fibres industries and others。