The long-awaited China trial of US food supplier OSI Group opened in Shanghai on Monday, kicking off the final act of a scandal that dragged in fast-food giants McDonald’s Corp and Yum Brands Inc.

In July 2014, a Chinese TV report alleged to show workers at a Shanghai unit of OSI using out-of-date meat and doctoring production dates, a scandal which rippled as far afield as Japan and prompted apologies from OSI clients McDonald’s and Yum.

The criminal trial opened at the Shanghai Jiading People’s Court, a court official and lawyers told Reuters. Shanghai prosecutors charged two OSI China units and 10 employees for producing and selling sub-standard products in September.