dear sir, we can offer natural and synthetic beta-carotene for your choice including 1%,10%, 20% and 30%,etc. we also offer ad carotene powder,etc. if you are interested, pls contact with us for more details. we can supply best quality nisin and good price to you. ken feng/sales manager abana foodstuff co.,ltd. add: e1005,no.1 yuancunerheng rd., guangzhou,china -510655 tel: (8620) 88528774 85542459 fax: (8620) 85538840 cell: (86) 13527861901 e-fax: +1 801 7492344 website: http://www.abanafood.com http://abanaco.en.ec21.com email: gzken@vip.sina.com / gzken@263.net address: no.1,yuancunerheng rd.,guangzhou,chinaguangzhouguangdong zip:510655 tel: 86-20-13527627950 contact: ken feng homepage: http://