Consumer complaints about online shopping or related services have grown 20-fold over the past six years to account for nearly 40 percent of the 112,000 complaints the city's consumer hotline received last year, the Shanghai Evening Post reported Sunday.

In 2012, the city's 12315 consumer hotline received 143,000 reports and complaints.

The  Internet-related complaints dealt with such topics as online shopping, Internet service and express delivery, the report said.

Due to the rapid rise in complaints about online shopping and related services, the Shanghai Administration for Industry and Commerce will continue to take measures to force online sellers to display their registration information and licenses in conspicuous positions on their websites.

So far, more than 64,000 online shops or companies have put their license information on their websites.

In the coming months, the administration will begin campaigns to crack down on counterfeit products and other goods that infringe upon intellectual property rights.

The administration advised consumers to use more well-known websites for online shopping and pay attention to product information such as the manufacturer, place of production and vendors' contact numbers. In addition, they should be more wary of exaggerated advertisement wording and ask for an invoice whenever possible.