The D-level clean workshop strictly controls pollution limits to ensure customer requirements for microbial limits. Using animal-free production raw materials to meet vaccine production needs. Single-batch producing capacity of the prokaryotic fermentation can meet the bacterial requirements for purifying hundreds of grams of protein. Our production line can obtain hundred of grams of protein in each single purification, and our thermostatic chamber(working temperature 8-10 °C) ensures protease activity. Single-batch producing capability of the entire production line can reach millions of reactions. Some protease production can reach a kg-level. At the same time, our plant is able to scale up production capacity to meet market deman`