we are real manufacturer of chitosan and chitin, we are purchasing a large quantity of snow crab shell, you you could supply, please with me. best regards, Bill Jin Vice general manager. SHANDONG LAIZHOU HIGHLY BIO-PRODUCTS CO.,LTD Add:No.275,Shifang Road,laizhou city,Shandong,P.R.China Tel:+8 mobel:+8 Fax: +8 Website:www.hlbiochem.com