Dear Sir or Madam, We are very glad to learn you are in the market for medical raw materials and writing to you in the hope of building business relations with you. We are an exporter in China; and in a position of producing and supplying Anti-cancer and Anti-HIV raw materials such as ritonavir and zidovudine at very competitive price. If you are interested in our products, please do not hesitate to contact us with following address for detailed enquiry and covering certificates. Your favorite reply will be highly appreciated.Yours faithfully, ChenHui MSN: xiamen kinglong hui import and export trading co.ltd