About Us - PANGOO. PANGOO BIOTECH HEBEI CO., LTD. Established in 1993, is a comprehensive company engaged in the research, development, sale, and service of Feed Additives in Amino Acids, Feed Protein, Vitamins…, and especially in Natural Materials. Such as soluble feed yeast, Soybean Meal, Corn Gluten Meal, Fish Meal, Lysine, Bacillus …