Shenzhen has done the best among China's major cities in enforcing the tobacco control law, according to a report released on Wednesday.

The report, released by the Beijing Impact Law Firm, also said enforcement in many major cities is lax.

Law enforcement authorities in Shenzhen, Guangdong province, inspected nearly 130,000 establishments and imposed fines of more than 552,000 yuan ($89,000) on individuals, and on owners of premises, who violated the regulation as of the end of March since the city's new tobacco control regulation took effect on March 1 last year.