Look at how fast the melamine in wheat quieted down. There is no way they could have fixed that so fast. The rat poison is used in their fields. They couldn’t have plowed new fields and grew wheat again to remain in the market.
That rat poison is in their entire food system.
It is a systemic problem. Only the wholesale collapse of processed food industry in China will bring serious change.
As it stands, their processed food are like plague. It continues to survive and spread.