Suifeng food group has over one million tons of modern national standard of grain storage warehouse, and then the city of grain reserves, including Dongguan Guofeng grain and oil limited company has 500000 tons of storage capacity of PLC automatic control of the national standard modern silos; storage capacity of 50000 tons of mechanized warehouse; built in 450000 tons of storage capacity of PLC automation control of the national standard of modern shallow silo; Dongguan Suifeng Food Co. Ltd. has 150000 tons of storage capacity of PLC automatic control of the national standard modern silos; Fengshun Ruifeng foodstuffs Co., the company has 70000 tons of storage capacity of PLC automatic control of the national standard of modernization in silos, in the construction of 100000 tons storage capacity PLC automation control standard the modernization of the shallow silo.