US supplier takes aim at Shanghai regulator

US food supplier OSI Group, which came under fire in China last year over allegations it used out-of-date meat, has criticized the handling of the case by the local food regulator, a rare act in China where firms are usually careful not to openly challenge the authorities.

OSI's Shanghai Husi Food plant came under the spotlight in July when an undercover Chinese media report showed workers using expired meat and doctoring production dates.

The firm, which supplied international fast food chains including McDonald's and Yum Brands, launched a sweeping recall last summer that culminated on Sunday when it said it had destroyed the products.