Sodium pyrophosphate is widely used in industrial production. In fact, in the earlier stage, some people in China used sodium pyrophosphate, only hemp shoes and other products used at that time. Most of them used forage as the key raw materials, such as corn straw and corn. Sodium pyrophosphate was widely used in industrial production. In fact, in the earlier stage, some people in China used sodium pyrophosphate, only hemp shoes and other products used at that time. Most of them used forage as the key raw materials, such as corn straw and corn. Sodium pyrophosphate was widely used in industrial production. In fact, in the earlier stage, some people in China used sodium pyrophosphate, only hemp shoes and other products used at that time. Most of them used forage as the key raw materials, such as corn straw and corn. Sodium pyrophosphate was widely used in industrial production. In fact, in the earlier stage, some people in China used sodium pyrophosphate, only hemp shoes and other products used at that time, most of which used forage as the key raw materials, such as corn straw and corn