It's encouraging that Chinese authorities, having had the problem thrown in their faces, are taking action.  Back in the Cold War days, and for long after, there would have been an official campaign to hush it all up in the interests of national prestige.  So, some progress, at least.

It should be remembered that the west's commitment to full and frank labelling of food and drugs is a relatively recent achievement.  I recall watching an episode of the UK television show, Who Do You Think You Are?  A celebrity was tracing his ancestry and found that no more than a hundred years ago, his forebears were paupers who made a living fashioning tiny "seeds" out of wood.  The little chips were mixed into a concoction of mashed-up turnips, sugar, and red dye that was sold to the poor as strawberry jam.

In the sixties, our own food industry fought truth in labelling with every resource they had.  We've come a long way in a short time..  China needs to catch up.