The supply and demand of major commodities in China will be basically balanced this year,according to an analysis on the national market of major comm odities conducted by the China Retailers Federation. -Grain output will increase this year,which will The supply and demand of major commodities in China will be basically balanced this year, according to an analysis on the national market of major comm odities conducted by the China Retailer s Federation. -Grain output will increase this year, which will