Challenge Biotechnology (Yantai) Co., Ltd. is a direct investment enterprise of the National Biofeed Engineering Center and Challenge Group. It is a modern large-scale biological high-tech enterprise with microbial technology as its core, integrating the research and development, production and sales of bio-fermentation feed technology. Our main products are: animal feed yeast (Pig Feed Yeast,brewers yeast for chickens,brewer yeast for pigeon,brewers yeast for ducks,brewers yeast for cats,live yeast for cattle,Yeast For Cattle Feed)and yeast culture (brewer yeast,brewers yeast powder,cell culture yeast,organic beer yeast). The factory covers an area of about 110 acres, with a total investment of 130 million yuan, of which the production area covers an area of about 60 acres and is divided into 4 main workshops (liquid workshop, solid mixing workshop, fermentation workshop, rough mixing workshop). There are a total of 6 warehouses: including the main workshop warehouse (about 4,500 square meters), liquid workshop warehouse, 4 fermentation tank warehouses, small warehouse in the north area, and warehouse in the east workshop.