AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.

AP - The resurfacing of tainted milk products in China highlights the challenges of policing the food supply in a country where close ties between local authorities and companies hamper regulation while producers are undertrained, experts said Thursday.