Active compound is fucoxanthin ,specification is 10% tested By UV and HPLC.fucoxanthin UV 10% is brown yellow powder,but 5% UV is brown powder,yet 10%and 5% tested By HPLC are both brown powder.Extract source is alge.Its function is to make human body perfect and beautiful.Because our extract source is natural and have no ant side effection. So our fucoxanthin is popular in weight loss market.You can not afraid you do not eat will make body fact.This weight loss products can not make your body rebound. Our packing type is Double-decker vacuum plastic, 2.5kgs/bags,25kgs/carton.