soybean protein isolate(spi) is high quality protein that our company produces with unpolluted, non-gmo high quality yellow river delta soybeans. the content of protein is over 90%. it can be easily digested and absorbed for supplementing the necessary protein and amino acid in time. it has the similar nutritious value as milk, chicken and meat, but with neither carbohydrate nor fat and choesterol. it has special health function. it has good characters as good emulsification, high gelagglutination, strong cohesion , good solubility and despensibility. it is suitable for the production of emulsive minced meat and fish products. the spi may join into the muscle fiber of the meat. through an agitating process, it may form an even and stable protein molecule membrane on the fat particles' surface. on the other hand, the characters of gel agglutination and cohesion make the protein solvent glue form a three diminsin network structure with certain mechanical strength so as to reinforce the intensity of the product and keep its demand water and fat content. it not only intensifies the quality (elasticity, hardness, cohesion, organoleptic chewiness) and flavor, but also increases the end product's quantity for the economy of the user.