The Chinese chamber, in its statement, said that China has been strictly following the agreement which took effect on Aug6,2013.

"We guarantee that all contracts are in line with the agreement. We are also in close communication with the EU Commission to periodically report all the contracts by Chinese manufacturers...The chamber checked with the Chinese companies that were reported to be breaking the agreement, and all stated that they did not violate the agreement and were willing to receive the verification by authorities," the chamber said in the statement.

The Chinese companies also condemned the "groundless reports", the statement said.

"The chamber has communicated with EU officials and agreed to conduct an on-site check soon regarding the implementation of the minimum price agreement. The chamber will support punitive measures if Chinese companies are found to be in violation of the agreement."

Cui Hongjian, director of European studies at the China Institute of International Studies, said the current dispute will not affect the overall agreement on solar products between China and the EU.

"The current dispute is more on a technical level and the Chinese government will not help the companies if they have violated the agreement. Unlike the dispute last year, China and the EU now have an established framework to control the disputes over solar products," Cui said.

"The key is for the EU Commission to maintain communication with its Chinese counterparts and avoid any misunderstanding," he said.

The United States on June 3 decided to levy preliminary duties, ranging from 18.56 percent to 35.21 percent, on Chinese solar equipment imports, claiming they had benefited unfairly from government subsidies.

Following the complaint from Solar World AG's US branch, the US probed solar product exports from China in 2011 and applied duties for the next year. 

US tariff investigation clouds solar panel products commerce	China's PV industry opposes US investigation