BEIJING -- Premier Li Keqiang, China's top economic official, has criticized the European Union for pursuing anti-dumping cases against Chinese solar power and telecommunications equipment that he warned will hurt both sides.

In a speech in Swizerland, Li said the action will hurt European consumers and might encourage trade protectionism, the official Xinhua News Agency reported.

The 27-nation EU imposed anti-dumping duties on Chinese-made solar panels this month to offset what it said were improper subsidies. Also this month, the EU said it will investigate whether Chinese telecom equipment makers also receive improper support.

"The cases over these two types of products will hurt Chinese industries, business and jobs and also damage the vital interests of European users and consumers," Li was quoted as saying in Zurich. "We express firm opposition."

Li gave no indication how Beijing might respond but his comments could fuel fears the government might retaliate against European telecom equipment suppliers that are looking for sales in China.

China faces complaints in a range of industries from clean energy to tire manufacturing that Chinese companies benefit from improper government support, including low-cost access to loans, energy and land.

Chinese makers of solar panels are struggling financially after government encouragement prompted hundreds of producers to rush into the market, depressing prices. The European anti-dumping duties on Chinese solar panels average 47 per cent.

In the telecoms case, the EU said last week that if negotiations with Beijing fail, it will open an investigation into whether Chinese manufacturers receive improper support. A decision that they do could lead to higher import tariffs.