Local media report that the municipal agriculture bureau says some supermarkets in Shenzhen, including Jusco, were have been selling unsafe vegetables and meat.
Jusco's whitebaits were found to contain large amounts of formaldehyde, and a Jusco representative says the unsafe whitebaits were removed immediately after the inspection.
The inspection found 3.15% of the inspected pork contained Clenbuterol Hydrochloride, a banned chemical.
The investigation also found 6.5% of vegetables sold at 28 supermarkets and 28 farmers' markets had excessive amounts of pesticides.