Profile: Zhejiang Weifeng Biotech Co.,Ltd. is specialized in research, exploration, production and trade together on biological chemosynthesis & feed additives. We are an ISO9001 certified company. Our products are manganese glycine, copper glycine, ferrous glycine, zinc glycine and selenium methionine. We provide manganese which is present in many enzyme systems and is required for biochemical process. Our copper glycine helps to hemoglobin synthesis and prevent from anemia occur. We offer zinc glycine which is used to prevent and cure parakeratosis & help to skin & feather growth in poultry. Our selenium is an antioxidant, and it protects the body's cells against free radicals & improve carcass quality.