HANGZHOU TOYOND BIOTECH CO., LTD is a professional supplier of Vitamins, Nutrition, Food additives, Feed additives and APIs. Our plant had 20 years experience in this field, which proved by GMP system, ISO system and HACCP system. Our key products Natural Vitamin E, Vitamin E Acetate, and Vitamin A exported to more than 50 different countries. We built four scientific and professional management systems to control all the stages. "GMP Manufacturing Management System": Most of our produ...