BEIJING - China's quality supervision departments investigated and seized counterfeit goods valued at 5.33 billion yuan ($844.5 million) through law enforcement last year, the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) said Thursday.

At an AQSIQ work conference, the administration's chief Zhi Shuping said that the administration's work last year focused on inspections of dairy products, liquor, meat and food additives, as well as intellectual property rights infringements.

The quality supervision departments revoked 15,000 licenses for industrial enterprises found to be producing counterfeit food products and shut down 426 dairy companies.

Zhi said the administration will blacklist companies that have been found to be violating the law and will punish offenders more harshly in the future.