BEIJING -- Chinese police have raided nearly 7,530 dens as of April, since the Ministry of Public Security launched a campaign to halt the production and sale of counterfeit goods last November.

The Ministry said in a statement Sunday that it has solved more than 10,300 cases of intellectual property rights (IPR) violations during the period in which more than 2,600 wholesalers or groups were involved.

In a separate campaign to check bank card related crimes, the ministry has solved more than 5,600 cases of bank card crimes during the first four months this year. They have also retrieved 130 million yuan($20 million) in funds.

The figure saw a year-on-year increase of 16.2 percent and 33.3 percent, respectively.

In campaigns to check bank card related crimes, police usually target crimes including fraud using fake cards, malicious overdrafts and illegal withdrawals using credit cards.